Related
I was getting out of space on my internal phone, so I decided to clear wipe cache and dalvik cache through CWM, but I find i save a lot of space BUT some apps stop working, maybe they are lost. So was does this actually do? Why are the apps there, but can't work? :crying:
Ok, after rebooting they are actually working again, i didn't even lost any data (progress on games) but I am really concerned what does this really do??
rolo143 said:
I was getting out of space on my internal phone, so I decided to clear wipe cache and dalvik cache through CWM, but I find i save a lot of space BUT some apps stop working, maybe they are lost. So was does this actually do? Why are the apps there, but can't work? :crying:
Ok, after rebooting they are actually working again, i didn't even lost any data (progress on games) but I am really concerned what does this really do??
Click to expand...
Click to collapse
http://en.wikipedia.org/wiki/Dalvik_(software)
When you reboot, Dalvik cache and Cache are re-created. So no space saved this way.
Feanor88 said:
http://en.wikipedia.org/wiki/Dalvik_(software)
When you reboot, Dalvik cache and Cache are re-created. So no space saved this way.
Click to expand...
Click to collapse
I was wondering what wiping the Dalvik cache did, too. I installed an inverted app and someone told me I needed to wipe the Dalvik cache in order for it to remain in place after a reboot, so I did that. Now my phone says "Optimizing apps..." It must rbe e-creating the cache.
As far as I know, when a rom boots up for the first time Dalvik goes through each & every apk's & extract the Dex & put it in the cache. So probably it is a location of all apks. If dalvik cache is not wiped after a new rom is installed,dalvik cache will skip because it founds the dexed cache files attach to the directory. The result is "Force close" issues.
So wiping dalvik cache can be done without any problem many times within the same rom & that's why is shows "optiming apps" after a dalvik cache wipe.
saqib nazm said:
As far as I know, when a rom boots up for the first time Dalvik goes through each & every apk's & extract the Dex & put it in the cache. So probably it is a location of all apks. If dalvik cache is not wiped after a new rom is installed,dalvik cache will skip because it founds the dexed cache files attach to the directory. The result is "Force close" issues.
So wiping dalvik cache can be done without any problem many times within the same rom & that's why is shows "optiming apps" after a dalvik cache wipe.
Click to expand...
Click to collapse
Thanks! That's in line with my suspicion, except I didn't know when I posted my question that an apk file was nothing but a zip file that contains a dex (Dalvik executable) and a bunch of other files. Your explanation makes sense. I also noticed that if I install an individual app from a zip file using CWM Recovery, then it clears the relevant part of the Dalvik cache for me. That doesn't happen when I install an apk file directly using Root Explorer.
guys one line question i am performing "Wipe cache and dalvik-cache" will my phone internal memory be deleted ? thanks a ton
deepankarbu said:
guys one line question i am performing "Wipe cache and dalvik-cache" will my phone internal memory be deleted ? thanks a ton
Click to expand...
Click to collapse
Nop, it will not
Sent from my SK17i using xda premium
Phone didn't boot after wiping Dalvik Cache
Hi Geeks
i have an Xperia Arc S modded with Cyanogenmod JellyBean 4.1.2 Cooked ROM
i had alot of memory issues as applications keep closing whenever system runs out of memory, it is always obvious in the DSP application with the walkman in addition to visualizations inside the walkman
i searched for a solution and some told me that wiping the dalvik cache might solve the problem, so i gave it a try and rebooted in CWM recovery mode "built inside ROM" , cleared the Dalvik cache , and the phone keeps displaying the Xperia Logo without any further progress, as if it's in somekinda loop !
any idea what to do next without wiping my Data ? thank you all
BR
AMR
Koptanov said:
Hi Geeks
i have an Xperia Arc S modded with Cyanogenmod JellyBean 4.1.2 Cooked ROM
i had alot of memory issues as applications keep closing whenever system runs out of memory, it is always obvious in the DSP application with the walkman in addition to visualizations inside the walkman
i searched for a solution and some told me that wiping the dalvik cache might solve the problem, so i gave it a try and rebooted in CWM recovery mode "built inside ROM" , cleared the Dalvik cache , and the phone keeps displaying the Xperia Logo without any further progress, as if it's in somekinda loop !
any idea what to do next without wiping my Data ? thank you all
BR
AMR
Click to expand...
Click to collapse
Are you sure you only wiped the dalvik?
Sent from Myushi
clears app cache
rolo143 said:
I was getting out of space on my internal phone, so I decided to clear wipe cache and dalvik cache through CWM, but I find i save a lot of space BUT some apps stop working, maybe they are lost. So was does this actually do? Why are the apps there, but can't work? :crying:
Ok, after rebooting they are actually working again, i didn't even lost any data (progress on games) but I am really concerned what does this really do??
Click to expand...
Click to collapse
it clears the app running cache stored in os.
absolutely ..
XperienceD said:
Are you sure you only wiped the dalvik?
Sent from Myushi
Click to expand...
Click to collapse
Yes sir it's only the dalvik cache, both ways this ROM was pretty heavy and i'm not satisfied with the reboot every 2 or 3 hours of use, i will install xperia ultimate HD ROM, they say it's pretty stable and has no problems, and it has the sound enhancements i needed in the Jellybean cooked ROM
thanks for your reply
alcatel 918n
XperienceD said:
Are you sure you only wiped the dalvik?
Sent from Myushi
Click to expand...
Click to collapse
My phone also has those options built-in. If you did the dalvik only it should get back to where you have the icons. BUT, if you did something else aside from the dalvik, my guess would be goodbye data and hello to phone repairs. Please research first before you do anything on your phone. Your phone and my phone have very powerful built-in tools. It could brick the phone. I hope you did not wipe data and flash.
help! my phone's boot taking too long
i wiped /cache and dalvik cache and format /cache. it's taking took long. been waiting for almost 1 hour.
Lucky Patcher Dalvik-cache
I am getting out of space msg when using Lucky Patcher.....apk will be patched on boot......it says to clear dalvik cache to save space.....is this a good idea(will I loose any data from game etc?) or this a issue with lucky patcher?
Clearing Dalvik
Feanor88 said:
When you reboot, Dalvik cache and Cache are re-created. So no space saved this way.
Click to expand...
Click to collapse
Um, that would involve the re- "optimization" process at each boot. Depending on the number of apps you have installed, this process can take an hour.
Simply put, the Dalvik cache is where a virtual machine program (like VMware Player, Workstation or Fusion or MSVM) called "Dalvik" stores information the applications on your device request it to. This storage is for the purpose of making app load times shorter, but because it's all low-level stuff, it has to be loaded prior to the AndroidOS frontend...Fortunately, this cache only needs to be rebuilt when a flag has been set indicating the need, which is set whenever the cache is cleared. Note the distinction between "loading" and "rebuilding" this cache. "Load" is synonymous with "read" and "rebuild" means "write." So time-wise it is the distinction in effort between reading a book and writing one.
Typically I only clear it for troubleshooting reasons; if something is not working. The latest Cyanogenmod has a major problem where the desktop data is liable to randomly corrupt.
Typically, the only solution is a Dalvik wipe in CM or whatever. If you have recently installed a large number of apps(over twenty)then it might be best to clear the cache via recovery at the next cold boot, especially if your device does weird stuff like getting hot, discharging while plugged in to the OEM charger, widgets crash spontaneously, wallpapers are replaced by defaults, etc....Some of these symptoms can also indicate a virus or malware infection,(especially on custom ROMs or rooted devices) so diagnosis is differential.
But essentially there is no harm in re-building the Dalvik cache, other than the time taken to do so.
Koptanov said:
Yes sir it's only the dalvik cache, both ways this ROM was pretty heavy and i'm not satisfied with the reboot every 2 or 3 hours of use, i will install xperia ultimate HD ROM, they say it's pretty stable and has no problems, and it has the sound enhancements i needed in the Jellybean cooked ROM
thanks for your reply
Click to expand...
Click to collapse
CM has this new MAJOR stability issue, it seems. The random crashes and reboots will soon combine(if they haven't already)with the deletion of your desktop customizations and your widgets will begin vanishing forever. Not even a full wipe and rebuild will bring them back.
Been using AOKP on Nexus 7 2013 for a month now. It is based on CM, but it is way more stable.....haven't needed to re-boot in two weeks! Uptime, baby!
UPDATE 04/05/2014: Been running without rebooting for over a month, now. AOKP is definitely WAY more stable than any other ROM I've used.
Dalvik explained
Saqib Nazm said:
As far as I know, when a rom boots up for the first time Dalvik goes through each & every apk's & extract the Dex & put it in the cache. So probably it is a location of all apks. If dalvik cache is not wiped after a new rom is installed,dalvik cache will skip because it founds the dexed cache files attach to the directory. The result is "Force close" issues.
So wiping dalvik cache can be done without any problem many times within the same rom & that's why is shows "optiming apps" after a dalvik cache wipe.
Click to expand...
Click to collapse
There is a full explanation of the dalvik cache on wikipedia.
The wiki entry fully explains dalvik cache and the integral part it plays in your android system. In very simple terms, it is a cache that allows the system to talk to the exe of a program without the need to load the cache on each and every start. The dalvik is is loaded once, and then never again (unless you wipe the dalvik cache, in which case, it is rebuilt upon reboot). There is no affect on any given program when the dalvik cache is wiped, other than starting slower the first time it is started after the wipe.
Related (I think) - Samsung Galaxy S5 running CM 12.1 latest nightly (6-14). I started on CM 12.0 nightlies in March or April and transitioned to 12.1 within a day or two acter it showed up. That was a relatively noticeable transition requiring new gapps and a factory reset as I recall. I read somewhere that wiping cache and dalvik cache was unnecessary between one 12.0 nightly to another and between one 12.1 nightly to another, so I typically have not performed the cache and dalvik wipe during nightly upgrades, of which I've probably done 30 or 40 since I started on 12.0. After each nightly update flash, when I ask TWRP to reboot the system, without wipes, all my 160 or so apps are optimized, taking some time, before the noot is compete. This morning out of curiosity, after the nee ROM was flashed, I chose the option in TWRP to wipe the cache and dalvik cache before I askefasked TWRP to reboot the system. The wipe process took at least as long to complete as a typical optimization, and when I rebooted, I still got the lengthy optimization. So I'm tbinking either there's no relationship berween app optimization and wiping the caches, or CM and/or TWRP automatically wipes the caches whether I do or not.
---------- Post added at 12:58 PM ---------- Previous post was at 12:54 PM ----------
Please forgive typos in my previous post - SwiftKey or something is making proofreading and editing difficult today.
Not the exact answer, but may interests u.
Koptanov said:
Hi Geeks
i have an Xperia Arc S modded with Cyanogenmod JellyBean 4.1.2 Cooked ROM
i had alot of memory issues as applications keep closing whenever system runs out of memory, it is always obvious in the DSP application with the walkman in addition to visualizations inside the walkman
AMR
Click to expand...
Click to collapse
Hi, I do not have the exact answer. But I wanted to share my own observation. When I wipe dalvik caches through CWM recovery, I find my phone taking a long time to finish booting every time. Sometimes I thought it would not boot up, I removed the battery and tried to swith on and my phone boots up. I do not know why it happens, may be I had installed a large no of apps.
I've got Nexus 5 with bootloader unlocked , after few weeks security patch arrived and after the phone switched off and showed error symbol and when I entered recovery mode it showed that error in system/bin.sh files need some help here
hi,
this ROM works very nice for me, thanks all the deveopers!
i have few questions:
(1) since this ROM has OTA updater (it seems, from the changelog), next time when the new version is realeased, can i just update the ROM via OTA updater?
(2) i dont really understand what “Wipe cache/dalvik” and “Wipe data / factory reset” really do. my guess is that “Wipe data / factory reset” repartitions the internal flash memory of the original memory, so we can use all the memory for our purpose. (not like original Nook Tablet, in which they dedicate only 1GB for personal usage)
if i understand all these correctly, this means next time if i flash the new ROM and want to keep the old data, i should not do "Wipe data / factory reset", but only need to do "Wipe cache/dalvik"? is this correct?
thanks so much,
Jun
junkoi said:
hi,
this ROM works very nice for me, thanks all the deveopers!
i have few questions:
(1) since this ROM has OTA updater (it seems, from the changelog), next time when the new version is realeased, can i just update the ROM via OTA updater?
(2) i dont really understand what “Wipe cache/dalvik” and “Wipe data / factory reset” really do. my guess is that “Wipe data / factory reset” repartitions the internal flash memory of the original memory, so we can use all the memory for our purpose. (not like original Nook Tablet, in which they dedicate only 1GB for personal usage)
if i understand all these correctly, this means next time if i flash the new ROM and want to keep the old data, i should not do "Wipe data / factory reset", but only need to do "Wipe cache/dalvik"? is this correct?
thanks so much,
Jun
Click to expand...
Click to collapse
Wipe data/factory reset is an option in CWM Recovery. Really all it does (from the screen messages) is format both /data and /cache.
Assuming you have CWM Recovery (though I imagine that there are similar entries in TWRP, I've just never used it), to wipe both of the caches you will first need to go to the entry "Wipe Cache Partition", which I believe is directly below Wipe Data/Factory Reset. Do that 3x (that's always been the recommendation, anyway) then go to Advanced and click on Wipe Dalvik Cache (again, 3x).
Again, assuming CWM Recovery, when you're in the recovery Vol Up/Down goes up and down in the list, the 'n' key is for Enter, and the Pwr button goes back.
I don't know about the OTA Updater. I always download and install ROMs (on both my phone and my NT) via Recovery.
Since this is a CM10 based rom you probably don't want to do the ota updater since that is a Cyanogenmod feature. This rom is optimized for the Nook from the CM10 Source I would presume. I personally tried the ota uldater since i get the notifications all the time but i get an error message something like "can't verify the source with a string of numbers". Stick to the recovery based flash installation.
Sent from my SPH-L710 using xda app-developers app
---------- Post added at 10:48 AM ---------- Previous post was at 10:10 AM ----------
I agree with liquidzoo that you should probably do the wipe cache, wipe dalvik cache and factory reset 3times seems like overkill but you can never be too safe. Also i use twrp recovery and click the system button and wipe system a few times as well.
Sent from my SPH-L710 using xda app-developers app
kobhomye said:
I agree with liquidzoo that you should probably do the wipe cache, wipe dalvik cache and factory reset 3times seems like overkill but you can never be too safe. Also i use twrp recovery and click the system button and wipe system a few times as well.
Sent from my SPH-L710 using xda app-developers app
Click to expand...
Click to collapse
I wipe /system 3x as well (under Mounts in CWM Recovery) when I'm installing a new ROM.
liquidzoo said:
I wipe /system 3x as well (under Mounts in CWM Recovery) when I'm installing a new ROM.
Click to expand...
Click to collapse
I'm not picking on you personally, but deleting and/or wiping partitions (in the case of /system) or directories (dalvik-cache) three times as opposed to once is completely unnecessary. You'll gain nothing by running the command three times over running it once, assuming you received no errors the first time.
When wiping the dalvik cache, both CM recovery and TWRP perform an "rm -rf /data/dalvik-cache" command using the shell. It's not Windows, and is unlikely to fail when passed the "-f (force)" option along with the "-r (recursive)" option.
In the case of wiping the /system partition, again both CM and TWRP write out zeros to clear the data on the partition. I would be suprised if CWM acted differently from CM and TWRP when wiping dalvik-cache and /system.
The only reason I bothered to look into what these commands actually do is to prevent a user from thinking there's a corellation between a failure to wipe 3x versus a problem they're having. If a 3x wipe "fixes" something for you, whatever the problem was, it's very unlikely that the second or third wipe was what fixed it but instead it was more likely a result of a clean install of the ROM.
References from source:
TWRP Wipe Dalvik - https://github.com/TeamWin/Team-Win...548de276b62c0e9af8661e/extra-functions.c#L986
TWRP Wipe/Format System - https://github.com/TeamWin/Team-Win...8de276b62c0e9af8661e/mtdutils/mtdutils.c#L498
CM Wipe Dalvik - https://github.com/CyanogenMod/andr...aa7ff3d06d5dd115b16c/extendedcommands.c#L1292
CM Wipe/Format System - https://github.com/CyanogenMod/andr...aa7ff3d06d5dd115b16c/mtdutils/mtdutils.c#L498
Have fun modding!
No worries, it's just something I've always done as it's been recommended to me in the past (there are some ROM developers that recommend 5x, actually). I'm not saying that 3x over 1x is any better, but I've never had issues. YMMV, but it doesn't take much more time and I like being thorough.
liquidzoo said:
Wipe data/factory reset is an option in CWM Recovery. Really all it does (from the screen messages) is format both /data and /cache.
Assuming you have CWM Recovery (though I imagine that there are similar entries in TWRP, I've just never used it), to wipe both of the caches you will first need to go to the entry "Wipe Cache Partition", which I believe is directly below Wipe Data/Factory Reset. Do that 3x (that's always been the recommendation, anyway) then go to Advanced and click on Wipe Dalvik Cache (again, 3x).
Click to expand...
Click to collapse
sorry, but can you confirm that when i upgrade to the new ROM (from the same author), it is really necessary to Wipe cache &Dalvik cache?
i am confused because somebody told me that i can just flash the ROM by installing the ZIP file (containing the ROM), and reboot the Nook without having to wipe or clean anything.
thanks,
JK
Flashing a ROM
junkoi said:
sorry, but can you confirm that when i upgrade to the new ROM (from the same author), it is really necessary to Wipe cache &Dalvik cache?
i am confused because somebody told me that i can just flash the ROM by installing the ZIP file (containing the ROM), and reboot the Nook without having to wipe or clean anything.
thanks,
JK
Click to expand...
Click to collapse
I don't know if I am doing it right or wrong but I have flashed numerous ROMs and lately have flashed every version of SGT7+CM10+Cherry Picks,By meghd00t. from 24/09 thru my current installation of 08/10 with only one glitch and that was when I flashed enhancements v2 on top of v1.
I have never had any other issues with the above mentioned ROMs except when I flashed 04/10 with enhancement v2. I didn't have the tablet option.
The way I do it is as follows:
1. format /system
2. format /data
3. Flash ROM
4. Flash CWM emmc
5. Flash GAPPs
6. Reset Factory/format data
7. Remove CWM SD card put in data SD Card with Flash Player (no longer avail on Google Play)
8. Boot from CWM menu
Takes awhile to boot this first time. When booted up I bypass the setup screens.
9. Manually set up wireless (need to access auth web site at work and need wireless to be working to accomplish that)
10. Browse to a web site and get redirected to auth page.
11. Auth
12. Set up Google account and other settings, especially under Security <Install from other locations>
13. Download apps I want from Google.
At this first boot SD card is not mounted.
14. Shut down and do a cold boot.
Now I can see SD Card.
15. Install Flash Player from External SD Card.
16. Install Crackle from Play Store.
Now I check Pandora for Audio, Crackle for Video, other apps I use, utilities, keyboards, launchers, games, etc.
So far since Version 24/09 everything has worked for me with the two exceptions above, tablet mode with 04/10 with enhancement v2 and when I flashed enhancement v2 over enhancement v1.
I am now running 08/10 and am very happy with the performance, battery drain is more than CM7 but that is to be expected from a fairly new ROM but not so bad that it is unacceptable, to me at least.
I have never had a black screen or arbitrary reboot (knock on wood). However I do turn my tablet off when I am finished using it, so don't know about deep sleep. I'm using OnDemand, and three launchers without one being the default....Apex, Nova and Trebucket.
All I can say is these developers really ROCK, way to go guys!
--------------------------------------------------------------------------------
MojoGB said:
The way I do it is as follows:
1. format /system
2. format /data
3. Flash ROM
4. Flash CWM emmc
5. Flash GAPPs
6. Reset Factory/format data
7. Remove CWM SD card put in data SD Card with Flash Player (no longer avail on Google Play)
8. Boot from CWM menu
Click to expand...
Click to collapse
You don't need to re-flash CWM every time you flash a ROM. Also, it doesn't make sense to me why you would do a factory reset/format after flashing the new ROM, I would think it would be done prior to flashing the ROM but maybe it doesn't make a difference, I don't know.
I've got TWRP installed to the emmc so I just download the new ROM to the SD with GooManager, reboot into recovery, do a backup, factory reset, flash new ROM & GApps and reboot. Only takes a few minutes.
Reflash ROM
LifeWOutMilk said:
You don't need to re-flash CWM every time you flash a ROM. Also, it doesn't make sense to me why you would do a factory reset/format after flashing the new ROM, I would think it would be done prior to flashing the ROM but maybe it doesn't make a difference, I don't know.
I've got TWRP installed to the emmc so I just download the new ROM to the SD with GooManager, reboot into recovery, do a backup, factory reset, flash new ROM & GApps and reboot. Only takes a few minutes.
Click to expand...
Click to collapse
Tried it as you mentioned, doing a factory reset before flashing the ROM and got a black screen and wouldn't boot. May have been a fluke but the way I mentioned above gives me a good image and alway boots. Don't know why, but if it works for me, I will continue to do it this way as long as it works for me. I have flashed numerous other ROMs the same way with good results each time.
junkoi said:
sorry, but can you confirm that when i upgrade to the new ROM (from the same author), it is really necessary to Wipe cache &Dalvik cache?
i am confused because somebody told me that i can just flash the ROM by installing the ZIP file (containing the ROM), and reboot the Nook without having to wipe or clean anything.
thanks,
JK
Click to expand...
Click to collapse
For an update, yes it is recommended to clear both caches. To be clear, this is only for an update. If it is a new ROM, or if the author recommends it, you should also wipe /data and /system first.
You can just flash without clearing them, but you might run into unexpected issues, so it's not recommended.
MojoGB said:
Tried it as you mentioned, doing a factory reset before flashing the ROM and got a black screen and wouldn't boot. May have been a fluke but the way I mentioned above gives me a good image and alway boots. Don't know why, but if it works for me, I will continue to do it this way as long as it works for me. I have flashed numerous other ROMs the same way with good results each time.
Click to expand...
Click to collapse
I get a black screen for a while on first boot too, but it only last a couple minutes at the most and if you shine a bright light at the screen you can see the CM logo spinning. Are you sure it was hung?
Sent from my Barnes & Noble Nook Tablet using xda premium
When you clear the Dalvik cache, it clears out data stored in your applications. When you turn on your Nook after clearing the Dalvik, the first thing it does is it rebuilds the Dalvik cache, that's why it seemed like it hung on startup. I believe the long black screen in the beginning is when it rebuilds Dalvik for core Android apps and then when it says "Optimizing Apps", that's for the rest of your applications. The more apps you have, the longer it will take to build the Dalvik. No need to freak out, just a little patience is all you need. Correct me if I'm wrong, however, as I'm still pretty much a noob at this... :laugh:
Flash a Rom
topdawg7793 said:
When you clear the Dalvik cache, it cleares out data stored in your applications. When you turn on your Nook after clearing the Dalvik, the first thing it does is it rebuilds the Dalvik cache, that's why it seemed like it hung on startup. I believe the long black screen in the beginning is when it rebuilds dalvik for core Android apps and then when it says "Optimizing Apps", that's for the rest of your applications. The more apps you have, the longer it will take to build the dalvik. No need to freak out, just a little patience is all you need. Correct me if I'm wrong, however, as I'm still pretty much a noob at this... :laugh:
Click to expand...
Click to collapse
Well fhe screen was black, no light at all and I waited for over five minutes for the Flash Screen to come up and it never did. Yes I know when you are waiting time drags. But due to the ROMS always taking awhile to boot up the first time I actually pay attention to how long it takes. No more then 2 minutes in my experience. I had to hold the power button in for a long time until it finally booted in B&N Recovery. Used my sequence mentioned in earlier post to flash the ROM again and everything worked as it should, GREAT. The number of APPs shouldn't be an issue as these ROMS only have the very basic apps.
I have read this forum and see the various and asundry errors some are getting, so far I have never gotten a major error, except for when I forgot to do the Wipe Data/Factory Reset after flashing.
I also got the "No Tablet Mode Option" with 04/10 with enhancement v2.
But I consider these minor issues and currently am running 08/10 with no issues, works smoother then any version of Microsoft Windows I have dealt with.
These developers are exceptional.
MojoGB said:
I don't know if I am doing it right or wrong but I have flashed numerous ROMs and lately have flashed every version of SGT7+CM10+Cherry Picks,By meghd00t. from 24/09 thru my current installation of 08/10 with only one glitch and that was when I flashed enhancements v2 on top of v1.
I have never had any other issues with the above mentioned ROMs except when I flashed 04/10 with enhancement v2. I didn't have the tablet option.
The way I do it is as follows:
1. format /system
2. format /data
3. Flash ROM
4. Flash CWM emmc
5. Flash GAPPs
6. Reset Factory/format data
7. Remove CWM SD card put in data SD Card with Flash Player (no longer avail on Google Play)
8. Boot from CWM menu
--------------------------------------------------------------------------------
Click to expand...
Click to collapse
oh, so you always reset factory every time you upgrade the ROM? that way will delete all the old data/apps you installed, so you need to install all the apps again?
this is my concern, because i dont want to reinstall apps, or lose my data. so i think i just need flash the new ROM, then Wipe cache/Dalvik cache, and hopefully all the old apps and data are still intact.
thanks.
MojoGB said:
I don't know if I am doing it right or wrong but I have flashed numerous ROMs and lately have flashed every version of SGT7+CM10+Cherry Picks,By meghd00t. from 24/09 thru my current installation of 08/10 with only one glitch and that was when I flashed enhancements v2 on top of v1.
--------------------------------------------------------------------------------
Click to expand...
Click to collapse
i have some questions on the "Enhancements":
(1) the correct way to install them is to flash version 1 first, then immediately flash version 2 right after version 1 (without having to reboot first)?
(2) i am not sure what i will get with this "enhancements". they will make video/audio playing more smoothly? is the quality improvement really noticable? anything else, like they make the battery last longer, for example?
thanks,
Jun
If you're running 08/10, the enhancements are not needed. That's my understanding at least. I had problems with V2 so I decided to not install them while on 04/10.
Sent from my Barnes & Noble Nook Tablet using xda premium
Flash Rom
junkoi said:
i have some questions on the "Enhancements":
(1) the correct way to install them is to flash version 1 first, then immediately flash version 2 right after version 1 (without having to reboot first)?
(2) i am not sure what i will get with this "enhancements". they will make video/audio playing more smoothly? is the quality improvement really noticable? anything else, like they make the battery last longer, for example?
thanks,
Jun
Click to expand...
Click to collapse
If you flash enhancement v2 on top of version 1 you will have problems, UI will stop. If you only flash v2 you will not have the Tablet Mode Option. So my understanding is that you can use either v1 or v2 but not both.
ROM 08/10 does not need either enhancement as indicated by the developer. ROM 08/10 works great by itself is my experience.
If I'm installing a ROM, backup the existing ROM and wipe everything.
If I'm installing a .zip package like GApps or an enhancement, backup the existing ROM, wipe Data/Dalvik.
Folks, these are development ROMS. Thar be bugs in thet thar code. It's going to take you longer than the time you think you're going to save by doing a dirty flash, and then having to restore the thing to stock (worse case) only to start all over.
Don't ask how I know.
wellersl said:
If I'm installing a ROM, backup the existing ROM and wipe everything.
Click to expand...
Click to collapse
so it is possible to back up the existing data/apps, then restore them back after the new ROM is flashed? could you please confirm this?
if so, how & what is the right steps to do the backup? can we still use CWM, or use ROM Manager, or other tools?
thanks
Hey guys,
I was running LiquidSmooth v2.9 previously, and thought I would try some of the other mods. Heard a lot about SlimBean so gave the lastest version a try (Build 7). Right off the bat, the ROM was highly unstable. It would crash randomly and often. After a few hard reboots (Power+Home button), the ROM just refused to start up - it would get stuck on the boot screen logo. I tried clearing the cache + Dalvik, but no luck. It would boot to the 'Android is optimizing app' bit but would get stuck at "starting apps" after it finished optimizing.
I had Illusion ROM on the phone, so flashed that, wiped the cache + Dalvik, but the phone is behaving in similar fashion. It gets stuck on the boot screen logo, or at the "starting apps" bit if i clear the Dalvik the cache.
I fear I may have bricked my phone. I hope there is a solution to this. Any help will be appreciated!
Did you format system and data before flashing?
slaphead20 said:
Did you format system and data before flashing?
Click to expand...
Click to collapse
I flashed via Rom Manager, and I selected Wipe Data and Cache option - however, that's not a complete format as in my pictures and whatsapp content still remained.
So, no?
mufaa said:
I flashed via Rom Manager, and I selected Wipe Data and Cache option - however, that's not a complete format as in my pictures and whatsapp content still remained.
So, no?
Click to expand...
Click to collapse
Don't use Rom manager is my advice on that............
BUT.......DO go to the Slim website and read the installation instructions!........that is what they are there for
slaphead20 said:
Don't use Rom manager is my advice on that............
BUT.......DO go to the Slim website and read the installation instructions!........that is what they are there for
Click to expand...
Click to collapse
It does say to format system - is there a way I can avoid this? My only concern is my camera images - I do have a backup, but I believe that when I will copy them from my PC to the phone, it will loose date formatting and just show them in an unorganized fashion.
slaphead20 said:
Don't use Rom manager is my advice on that............
BUT.......DO go to the Slim website and read the installation instructions!........that is what they are there for
Click to expand...
Click to collapse
I went to CMW and selected wipe/factory reset option which should delete all user data. It brought my phone back to life, with IllusionRom in it, but I am encountering random crashes like how I did when I first installed SlimBean. I am sure it's going to go the same way and I will be stuck again with a bricked phone.
Slim Bean suggest to format/system from Mount and Storage in CMW. Is that recommended? Because wipe/factory reset did not delete my user data like Gallery images.
mufaa said:
I went to CMW and selected wipe/factory reset option which should delete all user data. It brought my phone back to life, with IllusionRom in it, but I am encountering random crashes like how I did when I first installed SlimBean. I am sure it's going to go the same way and I will be stuck again with a bricked phone.
Slim Bean suggest to format/system from Mount and Storage in CMW. Is that recommended? Because wipe/factory reset did not delete my user data like Gallery images.
Click to expand...
Click to collapse
AS said if you messed up format .
Cache system data preload and sd card .
jje
Factory reset does not format system, it wipes data. The instructions clearly state format system and data
JJEgan said:
AS said if you messed up format .
Cache system data preload and sd card .
jje
Click to expand...
Click to collapse
slaphead20 said:
Factory reset does not format system, it wipes data. The instructions clearly state format system and data
Click to expand...
Click to collapse
Is deleting SD card necessary - I don't know how that will help especially since it only has images and other media.
I will try formatting system, data, and preload. Should do something else - like erasing the currently installed ROM and put it back again? No idea how to do that though. Should I flash the ROM again, regardless?
mufaa said:
Is deleting SD card necessary - I don't know how that will help especially since it only has images and other media.
I will try formatting system, data, and preload. Should do something else - like erasing the currently installed ROM and put it back again? No idea how to do that though. Should I flash the ROM again, regardless?
Click to expand...
Click to collapse
No leave the sd card only format if you have problems .
Use the How to return to stock for warranty guide to restore your phone .
I suggest you then read the basic faqs and guides before flashing anything .
jje
mufaa said:
It does say to format system - is there a way I can avoid this? My only concern is my camera images
Click to expand...
Click to collapse
camera images are stored on /sdcard not /system.
This is quite a basic understanding of layout. Please read the "read before rooting" thread in my signature. It has all the basic info you need to know.
I performed format/system/data/preload/cache, wiped dalvik and normal cache, and reset to factory settings. Installed Slim bean along with Slim Gapps. It seems to be working, or rather I am getting prolonged used out of it before it crashes. It has only crashed once for me (I was just browsing the homescreen), but I haven't used the phone frequently due to work.
I don't think the problem is solved. Could it be related to emmc chip?
mufaa said:
I performed format/system/data/preload/cache, wiped dalvik and normal cache, and reset to factory settings. Installed Slim bean along with Slim Gapps. It seems to be working, or rather I am getting prolonged used out of it before it crashes. It has only crashed once for me (I was just browsing the homescreen), but I haven't used the phone frequently due to work.
I don't think the problem is solved. Could it be related to emmc chip?
Click to expand...
Click to collapse
Rom not chip flash stock rom and test .
jje
I have had two crashes so far, but since the past 5-6 hours, it is going steady. Slim Bean is quite slow, especially compared to LS, but I am not if it's the ROM or if the system is performing optimally.
Anyways, if I have another crash, I will install the stock and give it a try. Will keep this thread updated.
mufaa said:
I have had two crashes so far, but since the past 5-6 hours, it is going steady. Slim Bean is quite slow, especially compared to LS, but I am not if it's the ROM or if the system is performing optimally.
Anyways, if I have another crash, I will install the stock and give it a try. Will keep this thread updated.
Click to expand...
Click to collapse
Best thing would be to go to the Slim thread and get reading and posting there
slaphead20 said:
Best thing would be to go to the Slim thread and get reading and posting there
Click to expand...
Click to collapse
I have now!
hello actually i am intending with xda developers forum and using custom rom for almost 8 years. but the problem is i never know what does that wipe methods do. until now i just fallowed the instructions but i think i need to know .
i have 2 main questions.
1-) what are this wipe processes do (exacly what are they wiping)
a-)Wipe Data/Factory Reset
b-)Wipe Cache Partition
c-)Wipe Dalvik Cache
please give me proper explenation for each .what are they wiping ? and why we using them for ?
2-) A proper cleaning on my android device. as much as i use my device there is junk files, cropses and all other unnecessary files rolling up in times. so this is very disturbing. and i want to have a blank page only with my rom and my karnel + bootloader etc files i don't want anything more.
so question is this. what should i do to clean my device as this clean like having nothing except basic things ?
if any of you explaint this 2 questions for a dumb user i hope it will be very helpfull also other newbie android users. or the people like me ignorant for 8 years shame of myself
anyway thank you for your help and interests.
Quayron said:
hello actually i am intending with xda developers forum and using custom rom for almost 8 years. but the problem is i never know what does that wipe methods do. until now i just fallowed the instructions but i think i need to know .
i have 2 main questions.
1-) what are this wipe processes do (exacly what are they wiping)
a-)Wipe Data/Factory Reset
b-)Wipe Cache Partition
c-)Wipe Dalvik Cache
please give me proper explenation for each .what are they wiping ? and why we using them for ?
2-) A proper cleaning on my android device. as much as i use my device there is junk files, cropses and all other unnecessary files rolling up in times. so this is very disturbing. and i want to have a blank page only with my rom and my karnel + bootloader etc files i don't want anything more.
so question is this. what should i do to clean my device as this clean like having nothing except basic things ?
if any of you explaint this 2 questions for a dumb user i hope it will be very helpfull also other newbie android users. or the people like me ignorant for 8 years shame of myself
anyway thank you for your help and interests.
Click to expand...
Click to collapse
A. Wiping data/factory reset completly erases whats in /data,
Your apps, dalvik cache, app data and many others are wiped, but those i listed are the most relevant
With certain devices internal storage can be wiped such as Xperias because /data/media is where the internal storage is mounted however this is typically avoided with the recoveries we have
2. Wiping cache, the cache is typically used to store information or app data that isnt permanent however that can cause crashes or other kinds of issues after a mod instalation
3. Dalvik/art cache is used to store decompiled readable versions of the android apps installed meaning it can launch the app much quicker however if you dont wipe this, it can cause much more issues after installing a app mod lets say
Envious_Data said:
A. Wiping data/factory reset completly erases whats in /data,
Your apps, dalvik cache, app data and many others are wiped, but those i listed are the most relevant
With certain devices internal storage can be wiped such as Xperias because /data/media is where the internal storage is mounted however this is typically avoided with the recoveries we have
2. Wiping cache, the cache is typically used to store information or app data that isnt permanent however that can cause crashes or other kinds of issues after a mod instalation
3. Dalvik/art cache is used to store decompiled readable versions of the android apps installed meaning it can launch the app much quicker however if you dont wipe this, it can cause much more issues after installing a app mod lets say
Click to expand...
Click to collapse
so is there a way to clean my leftover media/data/etc.. in internal storage withouth touching rom files ?
Quayron said:
so is there a way to clean my leftover media/data/etc.. in internal storage withouth touching rom files ?
Click to expand...
Click to collapse
Your ROM is in /system so wiping data doesn't affect the system its self
You can wipe data but that wipes dalvik cache
Its probably better to wipe caches with a data wipe
Quayron said:
so is there a way to clean my leftover media/data/etc.. in internal storage withouth touching rom files ?
Click to expand...
Click to collapse
thank you so much.
Good evening, gentlemen, I have a Redmi Note 3 Pro Kate and I like to try out some ROMS. I was using the Pixel Experience on Android 8.1 normally, with everything working. I saw that the version with Android 9.0 (Pie) had been released and I installed it through TWRP.
The ROM worked normal except for the camera, since dealing with a beta is acceptable. I decided to back up the backup I had made by TWRP and guess what, the camera was not working too.
I tried other ROMS like Lineage OS 14.1, Havoc OS and then came back I reinstalled Pixel Experience 8.1 cleanly.
Every time I reinstall, the native ROM camera application is not installed along with the other applications and even installing other applications seems like the "camera service" has not been installed.
Has anyone been through this and can you help me?
AlphaHook said:
Good evening, gentlemen, I have a Redmi Note 3 Pro Kate and I like to try out some ROMS. I was using the Pixel Experience on Android 8.1 normally, with everything working. I saw that the version with Android 9.0 (Pie) had been released and I installed it through TWRP.
The ROM worked normal except for the camera, since dealing with a beta is acceptable. I decided to back up the backup I had made by TWRP and guess what, the camera was not working too.
I tried other ROMS like Lineage OS 14.1, Havoc OS and then came back I reinstalled Pixel Experience 8.1 cleanly.
Every time I reinstall, the native ROM camera application is not installed along with the other applications and even installing other applications seems like the "camera service" has not been installed.
Has anyone been through this and can you help me?
Click to expand...
Click to collapse
First thing is stay on latest twrp 3.2.3.
Also flash latest firmware zip.
Your cam is crashing or not showing coz May be data and internal storage was encrypted in previous rom.
Before installing new rom. Format data in twrp. I m not talking about wipe data.
Format data will format you data and internal storage.
If you encrypt your device. Camera will crash or wont work.
So go to twrp
First > Format data < must do
Then you can do wipe data reset
Flash rom
Flash gapps
Reboot
naik2902 said:
First thing is stay on latest twrp 3.2.3.
Also flash latest firmware zip.
Your cam is crashing or not showing coz May be data and internal storage was encrypted in previous rom.
Before installing new rom. Format data in twrp. I m not talking about wipe data.
Format data will format you data and internal storage.
If you encrypt your device. Camera will crash or wont work.
So go to twrp
First > Format data < must do
Then you can do wipe data reset
Flash rom
Flash gapps
Reboot
Click to expand...
Click to collapse
My God, man, I can not believe it worked.
Thank you very much!