Related
Let me start out by saying that I have searched for any threads that have covered this, and have come up empty.
This has happened twice to me in the last two months. Running task650's V.9, which is an awesome ROM. I've got a Lexar Class 10 32gb card. Twice in two months have I booted up and the media scanner would show a broken sd card notice. I tried booting the phone without the card, and then re-installed the card. Same notice of bad sd card on boot.
At this point I took the card and stuck it in a laptop, which generated a "can not open due to corrupt or unreadable file" and "reformat drive" or something like that. I was forced to format, losing photos, vids, and TiBu folder. I synced to Dropbox and got the backup folder re-installed.
Any ideas about what could have corrupted the card? I suppose the card could be damaged. I paid good bucks, as it is not a low end card. Replace the card? Any guidance would be appreciated.
I have a Lexar Class 10 32GB card. Same issue, after first time reformatted and same thing happened a week or two later.
I did an RMA with Lexar, think there is a 1 year warranty. Got a new card, been working fine the past several months.
Ok. Thanks for the input. I've got a Kingston Class 10 on the way.
I was hoping it wasn't in the phone hardware.
Thanks, I just reminded myself to do a backup of that card itself to my PC.
Sorry to hear about your problem though.
L
LiLChris06 said:
Thanks, I just reminded myself to do a backup of that card itself to my PC.
Sorry to hear about your problem though.
Click to expand...
Click to collapse
Looks like I will be starting practice myself
Sent from my SAMSUNG-SGH-I777 using xda premium
This just happened to me two days ago. Lost some pics that was about it. Pissed me off because they were of my son and you'll never get those moment back but too late now. Always backup!!
Sent from my SGH-I777 using XDA App
Skyler2Dope said:
This just happened to me two days ago. Lost some pics that was about it. Pissed me off because they were of my son and you'll never get those moment back but too late now. Always backup!!
Sent from my SGH-I777 using XDA App
Click to expand...
Click to collapse
Yeah, I lost some New Years day photos and vids with my wife. I'll NEVER find her in that good of a mood again!
It makes me wonder about my decision to place my TiBu folder on the external card, along with Nandroid backups. True, it syncs to Drop Box for TiBu but do I need the extra headache of wondering if my card is going to get smoked again? I suppose I should be backing it all up to pc..
I'm not sure but it seems to be a problem with the phone and class 10 cards.
My first one was a 16gb class 10 micro sd that one day just decided to stop working (lasted a month or so). Couldn't access it via the phone or PC.
So I went out and got a 32gb class 10 and after a month or so again it stopped working
Knowing this I refused to buy a class 10 card again. I went to Walmart and got the cheapest 32gb micro sd (Sandisk class 4) and so far so good. no problems at all
Lost everything I had too on the first 2 cards so learned the hard way to do backups to my PC.
Not the class, it's probably the brand. Some brands have terrible quality control, especially if you go for a cheaper one. I have one from Amazon Basic and it works just fine. My brother uses one from SanDisk with zero problem.
Class 10 is also newer. The technology to manufacture these is not that old. I suspect some manufacturers still need to refine their process.
Sent from my Galaxy SII
me too
Posted this on similar thread here, but want to make sure people know it's a problem:
Got a similar problem here.
Transcend Class 10 32GB Card
Works in PC, HTC Desire - no probs.
Put in Galaxy S2, it starts Media Scanning, a few seconds later reports SD Card Damaged, requires formatting.
It's right - take it back out (again, umpteenth time!), put it in PC or HTC - card is "damaged". (Nothing permanent, can reformat.)
Samsung support claim to not know anything - mind you they "play dumb" about the camera "pink spot" issue, until you challenge them to get real...
Oh, dear!
Brian
---------- Post added at 12:31 PM ---------- Previous post was at 11:51 AM ----------
I thought my Galaxy was shagging the Card - but it could be a Fake
Testing now with H2testw (also visual clues available) see
YouTube video watch?v=ePdITNObDYE
Hope this helps
Brian
Buy a 500gb external hard drive for like 50 bucks they're cheap now. Backup everything to it once a week. Never lose data. Profit.
Sent from my SGH-I777 using Tapatalk 2
Sounds like a brand issue, but have you ever tried checking the drive for errors?
Given that even your PC gives you a "damaged" message, it may not work. Once inserted, go to "My Computer," get to properties, and check for errors (enable the "automatically fix file system errors" option). In the past, this has corrected "corrupted" SD cards for me.
geomax45 said:
Let me start out by saying that I have searched for any threads that have covered this, and have come up empty.
This has happened twice to me in the last two months. Running task650's V.9, which is an awesome ROM. I've got a Lexar Class 10 32gb card. Twice in two months have I booted up and the media scanner would show a broken sd card notice. I tried booting the phone without the card, and then re-installed the card. Same notice of bad sd card on boot.
At this point I took the card and stuck it in a laptop, which generated a "can not open due to corrupt or unreadable file" and "reformat drive" or something like that. I was forced to format, losing photos, vids, and TiBu folder. I synced to Dropbox and got the backup folder re-installed.
Any ideas about what could have corrupted the card? I suppose the card could be damaged. I paid good bucks, as it is not a low end card. Replace the card? Any guidance would be appreciated.
Click to expand...
Click to collapse
The only corruptions I have experienced on this phone were when using MTP to transfer files from the PC. Since I stopped using MTP and use only USB Storage mounting, I have not had any more problems.
I've actually experienced this twice. Both times flashing to AOKP. I'm not blaming AOKP but just saying. The first time even my PC wouldn't read it and it needed to be reformatted. The second time my pc could read it and after nandroiding back to shostock2 it was fine.
Sent from my SGH-I777 using xda premium
Hey all,
I thought I would share my findings to help others with the same issue.
Two days ago I kept catching glimpses of a card image in the notifications at the top of the screen, but it would only be for a second so I could not see what it was trying to tell me. But had a quick look and sd card seemed fine and all data was present on handset. A couple of hours later it popped up with "SD Card Unexpectedly Removed". I tried ejecting and reinserting,restarting device and turning off and removing battery all to no avail. So I did a quick search which showed this seemed to be quite a common issue, after reading many threads with people saying the sd card is corrupt or network providers saying it was software and to do a restore. I decided before all that hassle I would open the phone and check the circuitboard expecting it to be a dry solder joint. One thing I will point out that was different to some other users is the fact my sd card was not visible with the phone connected to the computer, so this may not solve all related issues.
THE FIX
Turn off phone, remove the battery, SIM card and sd card. Remove all screws except the one by the 3.5mm jack. Gently pull the white plastic trim that surrounds the card holders and battery but the top part with speaker and camera does not need removing. Once removed if you look to the left of the sd card holder you will see the ribbon that connects the sd card to the main circuit board and at the end of the ribbon is the connector. Mine was disconnected and was loose, even if yours is not loose it would be worth gently pulling it off and reconnecting it. Then reassemble in the reverse order.
This was a nice surprise in the sense it was a very simple fix. However when I mounted the sd card even directly in my pc it was not found, I assume that the loose connector floating about had probably shorted its connections and caused an issue with the sd card. After a handfuls of attempts at mounting it in my pc it was finally detected and I backed up all the data and reformatted the sd card, then copied the data back,mounted it in my phone and was happy to find it all working as expected.
I hope this information will help some of you out, as it was a simple fix to a simple issue and results from searching had no solutions, just lots of assumptions.
And what can I do
Hi
I read your articles and seem very good but u have a question.
I had the same issue and I saw that every time my phone said I hat message it creates in my sd card a folder named lost. I and then i saw that one part of my battery was going there, ti reconnect the phone with my sd card
I formatted my sd card and did all the things that I found in the Internetbut nnothing works and I just change my sd for another one I had and sincethere u ddon't have any other issue, but my computer detects very good my first sd card and I'm not sure how to fix it.
Any idea?
Regards
Recently ive just faced this issue, what I did is to insert my 32gb sd card in my PC and run CHKDISK, havent got any error while performing this, thereafter i inserted it in my phone & goodness till now this sd card error hasn't appear yet. (finger crossed).
Mine did something like this a few times and then the 32GB Sandisk class 10 card died. Couldn't get it to work in any device except Linux based Media player. Luckily managed to copy my nadroid backup and TB backup. Sent to Sandisk and they replaced it. There is already a thread about S3 damaging teh SD cards. May be the loose connection is what's causing the card to to end up dead.
sak500 said:
Mine did something like this a few times and then the 32GB Sandisk class 10 card died. Couldn't get it to work in any device except Linux based Media player. Luckily managed to copy my nadroid backup and TB backup. Sent to Sandisk and they replaced it. There is already a thread about S3 damaging teh SD cards. May be the loose connection is what's causing the card to to end up dead.
Click to expand...
Click to collapse
Yeah,as mentioned I have seen a lot of issues about sd cards, this is the first issue I have had and thought it would be worth mentioning. There is little space when the case is together so it could easily still make contact and seem fine even if the connector has worked loose and cause all kinds of issues. As mentioned mine had the sd icon popping up every now and then before it actually failed. Some users seem to be going through a lot of sd cards with them failing on a regular bassis.
I've been using my 32gb card since my last phone which was the LG Optimus 3D it is a scandisk class 10 one. Anyway i took it out of the 3D and stuck it into my S3 i still have not had a problem. I did take it out a few times to put a rom in because i wiped my phone and didn't have a rom in the Sd card. Also i dropped my phone and replaced the whole front silver bumper bit the whole digitizer because i dropped my phone while playing basketball. It still works. It has been a year now it has been in two phones and still works great. I must be lucky..
I got mugged for the SD though i bought it last year for £60 from Argos a store in the UK. Now you can get them for half the price oh well.. I am waiting for the 128gb ones to come out so going to buy one lol..
today also my Sandisk Ultra HC I 32GB it's died, tomorrow I'll test with pc but no sign of life :crying: WTF samsung !!!
hey i have the same issue with an 32gb sd card, it was workking great and then i was getting the error about
"SD Card Unexpectedly Removed" and then i tried everything i could and my computer detect the sd card and it seems to be working normal but in my phone i have the error over and over again and it was draining my battery too, and the only thing i did was change to another 16gb sd card and this one is working.
maybe there is a problem with the 32gb sd cards
I have a 16GB Sandisk UHS-1 card and i have been getting this issue as well, and its becoming more and more frequent. Whenver it happens, the ringtones/notifications for certain apps like Gmail and Message get reset as the ringtones i set were stored in the sdcard. Also the photo frame app i have on my homescreen often resets to nothing as the pictures were also stored in the sdcard. Its really annoying because I can leave my phone sleeping, only to wake it up realizing my ringtones are all set to silent and my photo frame has been reset. At least i know its a common problem. damn you samsung!
Has anyone actually tried checking the connection on the ribbon as suggested? Mine has been fine since and works fine.
Does this method void our warranty? Seems so.
Sent from my GT-I9300 using xda app-developers app
SlimJ87D said:
Does this method void our warranty? Seems so.
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
There is no way anyone would know you have opened it, the screws are all Philips instead of t6. As long as you use the correct screwdriver it won't damage the heads and will leave no sign of entery and it takes around 10 mins to complete. Or you could take it to Samsung to do but seems a lot of hassle for such a simple fix.
Also most people are rooted without concern of the warranty.
So there's no seals or stickers that are broken?
Sent from my GT-I9300 using xda app-developers app
SlimJ87D said:
So there's no seals or stickers that are broken?
Sent from my GT-I9300 using xda app-developers app
Click to expand...
Click to collapse
Nope, no sticker or seals and just so you know all screws to remove the back are identical, there are only two screws inside which are different but do not need removing for this. You only need a Philips screwdriver ( I used a ph00 x 40) as long as the screwdriver fits the screw well it will not damage the head. Once screws are out a flat head screwdriver or similar are helpfull to prise the back off.
Hi Guys,
A little feedback from my experience with this.
I too was experiencing the "Unexpectedly Removed" error on my 32GB Class10 Sandisk.
It was playing havok with my setup because I use a 8GB Ext4 Partition on the card, where I move 90% of my apps. (About 6GB of that is used by games + their "external" data), and it keeps my phone and FAT32 partition free for important stuff. (I use Link2SD and DirectoryBind)
The problem is, after the device wakes, Link2SD can't find any of the apps, so I can't start any of them, and I have to do a full reboot to get them back. :/
So, after searching and searching, I couldnt find a valid solution.
I tried with a 16GB class10 Samsung, and a 32GB Class10 Samsung card. Exact same setup. NO ISSUES.
Everything works perfectly.
Then I found this thread:
http://forum.xda-developers.com/showthread.php?t=1933743&page=2
Where most of them are experiencing this error with Sandisk cards.
Apparently, it's a known issue with Sandisk Cards (especially the 32GB models), and cards sold after December 2012 no longer experience this.
I have contacted Amazon.co.uk about replacing the card as it's only 2 months old, still waiting for their answer. Will update if anyones interested.
cheers
tryerxda said:
Hi Guys,
A little feedback from my experience with this.
I too was experiencing the "Unexpectedly Removed" error on my 32GB Class10 Sandisk.
It was playing havok with my setup because I use a 8GB Ext4 Partition on the card, where I move 90% of my apps. (About 6GB of that is used by games + their "external" data), and it keeps my phone and FAT32 partition free for important stuff. (I use Link2SD and DirectoryBind)
The problem is, after the device wakes, Link2SD can't find any of the apps, so I can't start any of them, and I have to do a full reboot to get them back. :/
So, after searching and searching, I couldnt find a valid solution.
I tried with a 16GB class10 Samsung, and a 32GB Class10 Samsung card. Exact same setup. NO ISSUES.
Everything works perfectly.
Apparently, it's a known issue with Sandisk Cards (especially the 32GB models), and cards sold after December 2012 no longer experience this.
Click to expand...
Click to collapse
A curious question if I may.
Was this a SanDisk Ultra (UHS) card? Most (if not all) Android phones do not have a proper UHS-I driver today and, although the card is supposed to switch down automatically, that transition time can fool the OS sometimes.
---
I am so clever that sometimes I don't understand a single word of what I am saying... (via Tapatalk)
ny_limited said:
A curious question if I may.
Was this a SanDisk Ultra (UHS) card? Most (if not all) Android phones do not have a proper UHS-I driver today
Click to expand...
Click to collapse
I read something about UHS compatibility, so I got an SD-HC
http://www.amazon.co.uk/gp/aw/d/B007JTKLEK/ref=mp_s_a_1?qid=1357264092&sr=8-7&pi=SL75
Is it the same thing?
Hmmm. Ok, might be getting somewhere.
Any idea if these cards have an internal "power saving" system that maybe kicks in if voltage drops below a certain level?
Sent from my GT-I9300 using xda app-developers app
tryerxda said:
I read something about UHS compatibility, so I got an SD-HC
http://www.amazon.co.uk/gp/aw/d/B007JTKLEK/ref=mp_s_a_1?qid=1357264092&sr=8-7&pi=SL75
Is it the same thing?
Hmmm. Ok, might be getting somewhere.
Any idea if these cards have an internal "power saving" system that maybe kicks in if voltage drops below a certain level?
Click to expand...
Click to collapse
Yes, the red and Grey SanDisk cards are UHS.
Yes, they definitely have controllers and the host device can command them (if it knows how). I know that they allow In System Programming (ISP) for updating firmware. They support auto-standby, power-off and sleep modes but am not certain if the card would switch without command. Check the SD link in my signature if you really need more info.
---
I am so clever that sometimes I don't understand a single word of what I am saying... (via Tapatalk)
I tested my SanDisk 64GB Ultra card in a Note 2 and it had the same symptoms (Mine were worse, with the card locking up while playing music after a few minutes, causing mmc timeout errors in the kernel).
I switched to a Samsung 64GB Pro card and since then I haven't had any issue. It's also twice as fast.
The amount of headaches this SanDisk card gave me is insane, probably the last time I buy a card from them.
i have sandisk ultra class 10 32gb. try this setup. use minitool to reformat your card then set it the cluster size to 16kb.
for me so far so good. will test this in a couple of days.
Hey all. Over the past week or so, I've been experiencing a problem where randomly, a message will come up in a random task saying something like "SD Card unmounted unexpectedly, it may be damaged." Anybody else experiencing this? It is the stock SD card and I've made 100% sure it wasn't loose or anything. Think this could just be a bad SD card?
willtoskie said:
Hey all. Over the past week or so, I've been experiencing a problem where randomly, a message will come up in a random task saying something like "SD Card unmounted unexpectedly, it may be damaged." Anybody else experiencing this? It is the stock SD card and I've made 100% sure it wasn't loose or anything. Think this could just be a bad SD card?
Click to expand...
Click to collapse
I'm running into the same problem. I've been ignoring it in hopes that it's a software issue that will get resolved whenever a JB ROM is released. Are you running a custom rom? I'm running The Base 0.7.3.
Fyi, I haven't had this problem at all in over two months of use. Ran stock for about a month and The Base rom for the past month.
Thank god other people have had it happen too. It's happened to me a lot BUT.. I had a 32gb class 4 SanDisk in my phone and that was constantly unmounting itself but I put the 16gb that came with my phone and it has yet to do it. Are you guys using a card other than what it came with?
Sent from my LG-E970
It happens to mine quite a bit, probably 7-10 times a day. I'm using a SanDisk 64GB class 10 SD card, formatted as ExFAT. Maybe I'll try switching back to the stock card to see if that has anything to do with it.
I had the same problem and switch out the card and the error stopped. I had the 32GB SanDisk Ultra and with that card it I was getting the random dismounts. I replaced it with the stock card and was working fine. I returned the SanDisk card and got a new one and it seems to be fine for about 5 days now.
What file formats are you using. My 64 GB is formatted as Fat32 and I've never had this issue. I also think that the included SD Card was pre-formatted to Fat32 which may be the reason it stopped when you switched back to it.
There you go... I've always used the stock sd card. Are you guys losing data when this happens?
This used to happen to me on my 64GB Sandisk Class 10 formatted with exFAT. I fixed it by running CHKDSK with both options checked in Windows 7. Hasn't happened since. It said it didn't detect any errors but it did something lol.
I don't believe I've lost any data. All of the songs I put on the SD card still play. I may try repairing it or using the SD card from my inspire, which may prove to be worse since I think it's only a class 4. I'll post once I figure something out.
One last thing was I tried doing a non-quick format of the card and after that my phone would not recognize that card at all until i exchanged it for a new one.
I generally don't recommend letting Windows GUI format a flash card. Google around for windows make clean, windows command line clean and format. That's your ticket right there.
So I am having a problem where my Sandisk 32GB MicroSD card is getting dismounted from the phone. It gives me an error message like "SD card has been removed. Please use the Safely Eject SD card option to prevent data loss" or something like that. Then, it finds the card and runs the media scan, which renders my card useless for that time period. The screen also turns on for a minute or so during this time. Then it stays mounted for maybe up until 5 minutes before starting over again.
This absolutely rapes my battery, taking it from a full charge to dead battery in less than two hours. I thought maybe the SD card was going bad even though it's fairly new, so I took it out and tried it on my old Motorola smartphone, and it works fine and never dismounts. So I thought perhaps it's something with my phone, so I tried an older 8GB micro SD, and it works fine without dismounting at all.
Some info. Phone is running stock 4.0.4 with root and unlocked bootloader. The 32GB SD card worked fine for maybe 3 months until this problem suddenly started. Any ideas?
acidtreat101 said:
So I am having a problem where my Sandisk 32GB MicroSD card is getting dismounted from the phone. It gives me an error message like "SD card has been removed. Please use the Safely Eject SD card option to prevent data loss" or something like that. Then, it finds the card and runs the media scan, which renders my card useless for that time period. The screen also turns on for a minute or so during this time. Then it stays mounted for maybe up until 5 minutes before starting over again.
This absolutely rapes my battery, taking it from a full charge to dead battery in less than two hours. I thought maybe the SD card was going bad even though it's fairly new, so I took it out and tried it on my old Motorola smartphone, and it works fine and never dismounts. So I thought perhaps it's something with my phone, so I tried an older 8GB micro SD, and it works fine without dismounting at all.
Some info. Phone is running stock 4.0.4 with root and unlocked bootloader. The 32GB SD card worked fine for maybe 3 months until this problem suddenly started. Any ideas?
Click to expand...
Click to collapse
It's behaving like mine did when the SD card croaked. 32GB SanDisk here as well...first SD card I've ever had die on me. I was able to get it to read, one time, on my TF101 to rescue my photos...now it won't read anywhere. I'm not sure what to tell you, except that I'd back that card up pronto, just in case...
dandrumheller said:
It's behaving like mine did when the SD card croaked. 32GB SanDisk here as well...first SD card I've ever had die on me. I was able to get it to read, one time, on my TF101 to rescue my photos...now it won't read anywhere. I'm not sure what to tell you, except that I'd back that card up pronto, just in case...
Click to expand...
Click to collapse
Yeah, it was a somewhat common issue for a few of us about 4 months ago. I know blenkows and I both had it happening a lot. For me it eventually went away, not sure what the deal was, there.
Sent from my LG-E970 using xda app-developers app
Jank4AU said:
Yeah, it was a somewhat common issue for a few of us about 4 months ago. I know blenkows and I both had it happening a lot. For me it eventually went away, not sure what the deal was, there.
Sent from my LG-E970 using xda app-developers app
Click to expand...
Click to collapse
This
My SD card wouldn't stop doing it. I just gave with it. Uploaded all my music to Google Play, put the 16 GB card that the phone came with in there. All is well now. Haven't had a problem with the card in there yet but I rarely use it now anyways. Basically just there for backups
____
Sent from my LG Original Gangsta
Your card is defective.
Sent from my Optimus G using xda premium
Well thanks for the responses, I already backed up the data that was on there. I can't find my receipt for it...any idea if Sandisk is good about replaced defective cards?
I went through four RMA replacement 64gb class 10 SanDisk cards, ate the $90 loss and spent $80 on the Samsung equivalent. It's faster and I have had zero problems with it. However, I used SanDisk cards for nearly a decade before those without any problems.
The SanDisk hi capacity cards seem to not work well in the lgog. They worked fine in my card readers, just not the lgog slot.
Sent from my Optimus G using xda premium
I also had this problem with a 32gb sandisk. I RMA'd it and it happens less frequently for the new one. I'd say it happens once every few weeks now instead.
It's your card. I haven't experienced this at all n I'm using a no name class 10 32gb card. I was looking scandisk card but luckily I read the reviews n they where all negative
Sent from my LG-E970 using Tapatalk 4 Beta
Ok so twice now my SD card has become corrupted and have lost all data that was on the cards. At first I thought it was the SD card that I first bought since it was a cheap no name brand, so I bought a SanDisk brand and it happened again. I'm not really sure when its happening or what's causing it to be come corrupt. Has anyone else had this happen to them? I read somewhere that flashing a lot of roms or kernels will corrupt your SD card, is there any truth to that? Also I'm rooted running skydragon Rom with the skydragon kernel, I do use some xposed modules. What can I do to keep this from happening again?
Sent from my VS985 4G using XDA Free mobile app
jurington said:
Ok so twice now my SD card has become corrupted and have lost all data that was on the cards. At first I thought it was the SD card that I first bought since it was a cheap no name brand, so I bought a SanDisk brand and it happened again. I'm not really sure when its happening or what's causing it to be come corrupt. Has anyone else had this happen to them? I read somewhere that flashing a lot of roms or kernels will corrupt your SD card, is there any truth to that? Also I'm rooted running skydragon Rom with the skydragon kernel, I do use some xposed modules. What can I do to keep this from happening again?
Sent from my VS985 4G using XDA Free mobile app
Click to expand...
Click to collapse
i dont know whats causing it or how to stop it, but that flashing theory is complete crap.
ive flashed several hundred times a year for the past 4 years and never had a corrupt card.
the cards have a reasonable life expectancy, so over time they could basically wear out and die (never had this happen either), but nothing ever flashes to the card, so i cant imagine how that could cause issues.
the first thing i would do is use this utility to verify your card is genuine and not damaged. if it passes the test, then i would start isolating the most recent apps you have used or downloaded that may write to the card, including but not limited to the file explorer you use to move files onto the card.
eliminate or add a couple a day until you can isolate the causing the corruption. its going to suk, but if there is an easier way, im not aware of it.
jurington said:
Ok so twice now my SD card has become corrupted and have lost all data that was on the cards. At first I thought it was the SD card that I first bought since it was a cheap no name brand, so I bought a SanDisk brand and it happened again. I'm not really sure when its happening or what's causing it to be come corrupt. Has anyone else had this happen to them? I read somewhere that flashing a lot of roms or kernels will corrupt your SD card, is there any truth to that? Also I'm rooted running skydragon Rom with the skydragon kernel, I do use some xposed modules. What can I do to keep this from happening again?
Sent from my VS985 4G using XDA Free mobile app
Click to expand...
Click to collapse
I'd install SD Card Monitor from the play store to see if the card is unexpectedly unmounting periodically. I have had a device that had a problematic SD Card Slot and until I used the SD Card Monitor App I did not know that the card was getting a "Bad Removal" as the app calls it periodically. A "Bad Removal" at the wrong time could easily cause card corruption.
FWIW, I also never do nandroids directly to the external SD. I backup to the internal, and sometimes I manually move the backup to external from within the booted Android. Most of the time any more I just keep the backup on internal though. I seem to have much less often corruption of my external SD card since I started doing this.
roirraW "edor" ehT said:
FWIW, I also never do nandroids directly to the external SD. I backup to the internal, and sometimes I manually move the backup to external from within the booted Android. Most of the time any more I just keep the backup on internal though. I seem to have much less often corruption of my external SD card since I started doing this.
Click to expand...
Click to collapse
^^^^^----- THIS!
If you are constantly backing up to your external SD, especially nandroids and you flash new ROMs like it's going out of style, you WILL reduce the life expectancy of your SD card.
SD cards have a limited life span. The more you write to them, the more wear and tear you do to them. I limit my writing now to adding new documents, copying new music and that's about it. I also store oft-used utilities there or images to flash to my phone, as well as the utilities for them, but I do not nandroid to it.
All my photos are stored on my internal memory.
I have had SD cards go out within a year. That was when I was doing a ton of nandroids to it, and in older phones, back when you could move apps to the SD card, those would go out as well since I was constantly writing app data to the SD card instead of internal memory.
How soon did they become corrupted btw? Within days, weeks or are you talking over a longer period?
Thanks!
Handling and Maintenance
A lot of people touch the contacts on the bottom of the card while they inset them, the oils from your fingers will create barrier between contacts of the phone and the card and it can cause file corruption. so I recommend washig your hands with soapy water, then pulling out the card and spraying rubbing alcohol on your sd card and drying it on a clean cloth and then holding the sides reinsert the card.
2nd thing is people don't format the card once it is in their phone. I absolutely recommend this as it is necessary to remove fragments from manufacturing formatting.
I have NEVER had a card fail me by following these two steps, and I've transferred thousands of songs and movies, and roms and backups over my cards through the years. The latest is a 32gb Samsung Evo Micro SD and i've NEVER had a problem even writing 4K video to it with my G3. Usually file corruption is user error. SD cards need maintenance. and if you copy and delete files constantly, including backups, I recommend a reformat of the card in your phone AGAIN as file fragments are left over and will cause corruption. MD5 sums are big because people don't know how to format regularly. Cheers
most of whats written here are absolute myths. Apps won't permanently corrupt your card, neither will nandroids and the cards if they are not cheap fakes are good for 10s of thousands of write cycles. What will damage your card are physical impact pressure, heat, and static electricity, bad formatting, bad partitioning and simple failure which does happen occasionally. Obviously removal and transport expose your card to more risk of physical damage.