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I've been running the leaked 3.16.651.0 ROM on my Sprint Mogul for a little less than month now. A problem I've seen (only twice) is that the microSD card just 'disappears'. Both native file explorer and Resco file explorer say it isn't there when I try to navigate to it. Problem is resolved with a soft reset.
I don't run programs from the card so I wouldn't notice it is missing unless I'm specifically working with files on it, which isn't too often. The fact that I've seen this twice (out of maybe 20 times working with the card) just had me wondering if anyone else has seen this. I'm using the 8GB Sandisk SDHC card. Since I just got the phone, and updated to the ROM about the same time I got the card, I have no experience with the card running on stock ROM
I've never had that problem (leaked or official ROM), but I seem to remember my old 6700 had issues like that when I installed voicecommand.
you should do a search cause alot of people with dcd rom based on the new rom had the same issue i think you have to not use encryption or something
Try installing this:
http://www.mediafire.com/?7mucmyyntlx
It's supposed to help your phone function with the larger Micro SD HC cards.
eXplicit815 said:
Try installing this:
http://www.mediafire.com/?7mucmyyntlx
It's supposed to help your phone function with the larger Micro SD HC cards.
Click to expand...
Click to collapse
correct me if im rong, i thought the mogul supported up to 8gb so why would you need the patch
Originally, it wasn't supposed to. It would only support up to 2GB. Coincidentally, it works, but will have it's days that it won't. This is to ensure that it works constantly.
I am running M$ Voice Command (1.60.4622.0) and did see this on rare occasion on my old 6700 too, but didn't investigate back then. I have not turned on encryption. There hasn't been a problem recognizing the 8GB capacity, just with it completely disappearing. It isn't a large problem, but even one disappearance seems odd.
I'll try collecting some baseline stats on how often it is disappearing by going to it regularly, and then try suggestions to see if things change for the better.
Any suggestions on places I should look beyond using file browsers (stock, Resco) and start>settings>device information>memory>storage card to see if the card is being recognized? I'll also try card re-insert vs. soft boot when it is gone to see if that brings it back. Thanks for the suggestions
eXplicit815 said:
Originally, it wasn't supposed to. It would only support up to 2GB. Coincidentally, it works, but will have it's days that it won't. This is to ensure that it works constantly.
Click to expand...
Click to collapse
i seen ppl say it works fine with 4 gb idk about 8 gb
Ran fine yesterday, saw problem today (last soft reset 1d2h ago). Additional details on symptoms on this particular failure: File browser: sees top level folders on storage card. In some of these lower level folders and files appear, in some not. Nothing consistent with respect to levels down where things start disappearing but I couldn't get to any folders or files more than two levels down. start>settings>system>memory>storage card shows capacity of card as 7782.5MB (correct), same amount as in use (incorrect), and 0 free. Popping the card out and in resolved the problem. Next time it fails I'll see what Pocket Mechanic can see with respect to the card when it goes out.
I did a search on 'storage card disappears'. Seems this is a problem folks experience across phones and WM5/WM6 PPCs. May even be the card. Didn't come across any explanations of the problem or fixes (some registry hacks related to thinking it is a new or old card, that were later discounted in the thread, but even if true, the new/old card isn't the problem as I'd still expect to see files if it were a new card). e.g., http://forum.xda-developers.com/showthread.php?p=1138270. From what I found searching, its something I live with for now. I'm pretty sure it isn't anything specific to 3.16.651.0 ...
Thanks for viewing this post.
I have been encountering a weird problem for some weeks. Whenever i reboot my optimus, memory card isn't recognized. No used/free space counter in settings, it's as if it just isn't there. Then, after some time "preparing sd card" appears in the notification center.
But the problem here is it isn't definite when will it appear- it can be after 5 minutes after booting or 7 hours. its just random. had been encountering it in cm7 for some time, thought ics would fix this problem (wiping everything). Worked like this for two days in ics.
Until tomorrow afternoon.
Now it just isn't recognizing it.
That's why i opened up my first thread.
Seems like the sd card read initialize settings are messed up. Used to be A flasher, but flashed my first ROM in two months, two days ago.
Ps: oh, and when it was getting recognized, the size of .androidsecure in root of the sd card wasn't getting analyzed, in windows it was.
Share your similar experiences, thoughts and let's come up with a solution to this one.
I think this is a hardware problem...
I believe by hardware you mean sd card. maybe but it works perfectly in windows pc, as well as Nokia phones.
Maybe the card holder (which, well, holds card in place) is acting up.
A point to be noted- other cards work flawlessly, and my card doesn't works in other phones. So, must probably (!) The memory card is the culprit.
Bought a new one altogether.
Thread can be deleted
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.
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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.
Hi,
Over the last week, I've had two SD cards die on me:
The first card I've had since I got my i9300 S3 (13 months). Prior to last week, it worked flawlessly (KomputerBay 32GB class 6). Then suddenly after rebooting I see an SD card damaged error. After trying chkdsk and fsck it looks like the card is certainly damaged but was able to recover some of the files.
Thinking it was just bad luck and the card dying, I purchased a 32gb class 10 Lexar card brand new. In the meantime, I used a 4GB Samsung SD card that came with the S3 for approximately 5 days and it worked fine with no errors or corruption.
With the new card, I copied over all my files, music etc. After an overnight using the phone, some calling etc. I rebooted the phone only to get the same error. Windows didn't even recognise the card let alone recover it. fsck likewise. Did a full format again and restored some files from original backup, it's been less than 24 hours and so far so good but I am not ready to relax just yet.
I'm really baffled as to what could be causing it as the card seems only to fail after a reboot. Prior to then, the card displays as mounted in system settings and files are accessible. The only other strange thing I've noticed is that when playing music/podcasts and turning off the screen the playback jitters for a moment or two before returning to normal. This started quite recently. I'm using UltimaROM 13.0 at the moment with Boeffla kernel. Have disabled all SD related optimisations and have no CPU or GPU overclocking or undervolting. I've been using Ultima for months with no major config changes recently.
I'm at the point now where I am almost scared to reboot! Last time I rebooted I unmounted the SD just in case. The only other possible difference in behaviour is that as I was travelling I had my phone on charge all night and although I can't be 100% sure rebooted with the phone charging (though again, its not the first time I've rebooted while charging). I've googled this far and wide and most SD related issues seem to be caused by the card randomly unmounting. I've never seen this in my instance.
Any ideas on what this might be or what I could do to troubleshoot further? I don't want to restore to stock, unroot, reset counters etc. and return to Samsung unless I can be at least reasonably confident its a hardware issue.
Thanks,
thegrantonstarcause said:
Hi,
Over the last week, I've had two SD cards die on me:
The first card I've had since I got my i9300 S3 (13 months). Prior to last week, it worked flawlessly (KomputerBay 32GB class 6). Then suddenly after rebooting I see an SD card damaged error. After trying chkdsk and fsck it looks like the card is certainly damaged but was able to recover some of the files.
Thinking it was just bad luck and the card dying, I purchased a 32gb class 10 Lexar card brand new. In the meantime, I used a 4GB Samsung SD card that came with the S3 for approximately 5 days and it worked fine with no errors or corruption.
With the new card, I copied over all my files, music etc. After an overnight using the phone, some calling etc. I rebooted the phone only to get the same error. Windows didn't even recognise the card let alone recover it. fsck likewise. Did a full format again and restored some files from original backup, it's been less than 24 hours and so far so good but I am not ready to relax just yet.
I'm really baffled as to what could be causing it as the card seems only to fail after a reboot. Prior to then, the card displays as mounted in system settings and files are accessible. The only other strange thing I've noticed is that when playing music/podcasts and turning off the screen the playback jitters for a moment or two before returning to normal. This started quite recently. I'm using UltimaROM 13.0 at the moment with Boeffla kernel. Have disabled all SD related optimisations and have no CPU or GPU overclocking or undervolting. I've been using Ultima for months with no major config changes recently.
I'm at the point now where I am almost scared to reboot! Last time I rebooted I unmounted the SD just in case. The only other possible difference in behaviour is that as I was travelling I had my phone on charge all night and although I can't be 100% sure rebooted with the phone charging (though again, its not the first time I've rebooted while charging). I've googled this far and wide and most SD related issues seem to be caused by the card randomly unmounting. I've never seen this in my instance.
Any ideas on what this might be or what I could do to troubleshoot further? I don't want to restore to stock, unroot, reset counters etc. and return to Samsung unless I can be at least reasonably confident its a hardware issue.
Thanks,
Click to expand...
Click to collapse
Have you read the other SD Kill thread? Should come up in a search
rootSU said:
Have you read the other SD Kill thread? Should come up in a search
Click to expand...
Click to collapse
Do you mean http://forum.xda-developers.com/showthread.php?t=1906058 ? If so, yes though the key difference for me is that my card doesn't seem to randomly unmount like most reports indicate. Also, it's very recent. Don't also see any possible solutions in there unless I'm missing something?
I have the 16 gb s4 and its great an all that we have a micro sd slot but I have found the whole concept unreliable at best. For one I have had 2 different sd cards fail. One gskill 32gb class 10 and a samsung 64 gb fail. All my pictures, roms and app gone. I back them up but still not being able to trust them is a huge concern. And the 64 gb seemed like a great idea except you have to format it fat32 to get recovery to view it, and when I did that my phone constantly wanted to format it back exfat. I pretty much have no option to get a 32 gig with a mdk rom either. Just my rant as I figure out how to rma both of these cards.
Sent from my SCH-I545 using xda premium
Sounds like you've just had some bad luck. I've been using a 64gb Class 10 SanDisk formatted for exFat and it's worked fine so far (I even use Folder Mount to move a bunch of stuff from internal to external).
Surprised the Samsung card failed on you.
Btw, the exfat/64gb issue only exits for some implementations. I'm running Barebones ME7 rom w/ktoonsez kernel and Phils/CWM recovery and both the recovery and the kernel support 64gb exFat.
Sent from my SCH-I545 using xda premium
Jayracer7474 said:
I have the 16 gb s4 and its great an all that we have a micro sd slot but I have found the whole concept unreliable at best. For one I have had 2 different sd cards fail. One gskill 32gb class 10 and a samsung 64 gb fail. All my pictures, roms and app gone. I back them up but still not being able to trust them is a huge concern. And the 64 gb seemed like a great idea except you have to format it fat32 to get recovery to view it, and when I did that my phone constantly wanted to format it back exfat. I pretty much have no option to get a 32 gig with a mdk rom either. Just my rant as I figure out how to rma both of these cards.
Sent from my SCH-I545 using xda premium
Click to expand...
Click to collapse
you might be just out of luck
I'm using a sanDisk Ultra 64GB on my S4 and everything works fine (FAT32 formatted)
I've never had any SD card fail me. Never heard of gskill and there is the possibility that the samsung sd card you got was a fake...depending on where you got it. I've used PNY, Samsung, and SanDisk sd cards and all have lasted me a long time through heavy usage.
I have a 64 gig sd card and never had an issue. I use it all the time.
first thing I did was wipe and format it in twrp recovery to whatever format it wanted.
golden.
Two cards failing? Unbelievable bad luck (I have never had a storage device of any type fail...not even platter hard drives...and I'm 43 and have had my own pc of some sort for 25 years), a bad card reader in the phone, or operator error.
I'm thinking bad card reader in the phone.
Sent from my GT-I9505G using xda premium
I've had a couple cards go bad. It happens. Learned to do periodical back ups.
Sent from my Galaxy S4 using tapatalk
During last week of owning my S3, i took my samsung 32gb microsd out when i replaced my screen , upon getting it all finished and putting it back in, the sd was dead. I feel you on that though, sucks to loose all the pictures. Wouldnt get recognized on either of my pcs, Old 8mp digital cam tried to format it but couldnt do it.
I bought an authentic sandisk 32gb microsd to replace it, so far so good.
brizey said:
Two cards failing? Unbelievable bad luck (I have never had a storage device of any type fail...not even platter hard drives...and I'm 43 and have had my own pc of some sort for 25 years), a bad card reader in the phone, or operator error.
I'm thinking bad card reader in the phone.
Sent from my GT-I9505G using xda premium
Click to expand...
Click to collapse
You need to go buy a lottery ticket, hdd/ssd/ram are the number one thin besides power supplies that die in computers. I have had probably a 10 percent failure amomg desktop ssd's since they first got popular. I build alot of computers and its definitely a brand/product line importance. Even the good guys come out with bad products time to time.
Sent from my SCH-I545 using xda premium
Jayracer7474 said:
You need to go buy a lottery ticket, hdd/ssd/ram are the number one thin besides power supplies that die in computers. I have had probably a 10 percent failure amomg desktop ssd's since they first got popular. I build alot of computers and its definitely a brand/product line importance. Even the good guys come out with bad products time to time.
Sent from my SCH-I545 using xda premium
Click to expand...
Click to collapse
I know it's crazy. My mom plays freecell on an old pc that I bought in 1999...and it's still on its original hard drive...and still boots an xp install I made in about 2005.
I've never had ram die either. Only power supplies and monitors.
Sent from my GT-I9505G using xda premium
I had an almost identical issue a while back. I used to always use a Sandisk 32gb class 10 card in my S3 and other devices. I used the same card for 3 or 4 years. When I got my S4 I decided to make the jump to a 64 gb card due to the small internal storage. So I went out and bought a 64 gb Class 10 Sandisk since I have always had good experiences with their cards. First thing I popped it into my computer and re-formatted it to Fat32. Then I plugged it into my phone and it seemed to work fine for a while, then randomly it would unmount itself and remount for no apparent reason. It would do it randomly 3 or 4 times a day. I tried wiping and reformatting to fat32 again, tried exfat, and even NTFS. Failing all that I took it back and exchanged it for another identical one. Same EXACT issue... So I gave it one last shot and exchanged one more time. At this point the ladies at Wal-mart are looking at me sideways like I'm running a scam or something. Lol. Anyways, the third one worked spectatularly. I haven't had one single unmount with it and I have all the storage I could possible need. I keep two Nandroid backups on my memory at all times (and with the S4 they are HUGE, 4gbs or better) and I have like 15 gbs of music, not to mention other miscellaneous files and apks and such, and I still have 30 gbs left.
I say just try it again man. Third times a charm. And I personally would always recommend Sandisk. I have never had one fail me and lost my data or anything. They have always worked for me.
nicholi2789 said:
I had an almost identical issue a while back. I used to always use a Sandisk 32gb class 10 card in my S3 and other devices. I used the same card for 3 or 4 years. When I got my S4 I decided to make the jump to a 64 gb card due to the small internal storage. So I went out and bought a 64 gb Class 10 Sandisk since I have always had good experiences with their cards. First thing I popped it into my computer and re-formatted it to Fat32. Then I plugged it into my phone and it seemed to work fine for a while, then randomly it would unmount itself and remount for no apparent reason. It would do it randomly 3 or 4 times a day. I tried wiping and reformatting to fat32 again, tried exfat, and even NTFS. Failing all that I took it back and exchanged it for another identical one. Same EXACT issue... So I gave it one last shot and exchanged one more time. At this point the ladies at Wal-mart are looking at me sideways like I'm running a scam or something. Lol. Anyways, the third one worked spectatularly. I haven't had one single unmount with it and I have all the storage I could possible need. I keep two Nandroid backups on my memory at all times (and with the S4 they are HUGE, 4gbs or better) and I have like 15 gbs of music, not to mention other miscellaneous files and apks and such, and I still have 30 gbs left.
I say just try it again man. Third times a charm. And I personally would always recommend Sandisk. I have never had one fail me and lost my data or anything. They have always worked for me.
Click to expand...
Click to collapse
Did you format back to Fat32 on your third try? I am going through the same thing and I am on my second card, waiting for the third to come in the mail. The first one I did Fat32 and out of the blue it would get extremely hot, and then say safe to remove card without me doing anything.
The second one, I left as is, copied everything over and left it exFat. That lasted about a week and then stuff started disappearing in gallery view, BUT it was there in Root explorer. The card it a Sandisk 64 gb Mobile Ultra.
kaos2569 said:
Did you format back to Fat32 on your third try? I am going through the same thing and I am on my second card, waiting for the third to come in the mail. The first one I did Fat32 and out of the blue it would get extremely hot, and then say safe to remove card without me doing anything.
The second one, I left as is, copied everything over and left it exFat. That lasted about a week and then stuff started disappearing in gallery view, BUT it was there in Root explorer. The card it a Sandisk 64 gb Mobile Ultra.
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Yeah mine was the same issue, only I didn't notice any heat to speak of. And yes on the first card I got, I used a windows program called fat32format and formatted it before ever even putting it in my phone. It would intermittently unmount and remount exactly as you are describing. So I took it out, wiped and reformatted to fat32 again. Still did the same thing. So as a last ditch I tried formatting to exfat. My phone and recovery both read the card just fine, it would just unmount randomly, or when I was either listening to music or viewing my gallery (something that required high read speeds) and it would unmount and interrupt it. So, thinkiing that it was just a faulty card I exchanged for a identical new one. Same issue. This time I used a different program to reformat to fat32, I forget the name of it, but it was a command line based reformatting tool for windows. I used it and had that same problem even after several reformats. At this point I was starting to wonder if it was a problem with my phone's SD card slot., So as a last effort I did one more exhange, reformatted using the command line tool and haven't had one single unmount since then, and I have ALOT of stuff on it. I would just suggest keep trying. I think that Galaxy phones are just sensitive to card reading and if you don't have an absolutely perfect one it will have problems. Or who knows, maybe I just had that off chance of one in a million by getting two bad cards in a row. Either way, I would suggest reading this thread (if you haven't already): http://forum.xda-developers.com/showthread.php?t=1773735
Use the first method on your new card. That I think is the most foolproof formatting method. Good luck, you will find the right card eventually.
Thank you!! Ill give it a shot tomorrow when the new card arrives. I appreciate that thread reference too! Fingers are crossed.
kaos2569 said:
Thank you!! Ill give it a shot tomorrow when the new card arrives. I appreciate that thread reference too! Fingers are crossed.
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Yeah no problem. Good luck
There may be a pattern....
But I am not sure exactly what it is.
I have two nearly identical SG4s (1 for + 1 for my wife) and both have the 64GB SanDisk Micro Ultra. One phone is completely stock (my wife's) and the card is lightly used and formatted exFat. Mine is rooted and Roomed (Synergy) with TiBkup and CWM. Like other folks, I had to reformat the card to Fat32 in order to work with CWM.
As far as I can tell, she never sees any un-mount/re-mount messages on her phone but it is lightly used and she might not notice. I DO see occasional un-mount/re-mount messages, but I cannot tie it to a specific program or event. Sometimes happens right after reboot. Sometimes happens when I launch TiBkup. But goes for days with no issues.
I have never lost any data or noticed any performance hits, but now I am worried that I might.
Guess it is time to take more backups of the backups...
I have had lots of computer equipment fail over the years, but never exactly like this...
Well I followed everything nicholi2789 suggested and low and behold my card is actually working good. It does not get hot when reading ( not as hot as the other 2 anyway) and I can see a big time difference in speed. So I guess its true, the third times a charm in the case of these 64 gb Sandisk Ultra cards.
Big thanks again to nicholi2789 for pointing me in the right direction!
I bought a SanDisk Microsdxc class 10 64gb and let the phone format. It's working great. It has the fastest speeds out of all I've seen.
It's a SanDisk Ultra 64 GB MicroSDXC Class 10 UHS-1 Memory Card with Adapter (SDSDQU-064G-AFFP-A)
At Amazon.
Sent from my SCH-I545 using xda premium
kaos2569 said:
Well I followed everything nicholi2789 suggested and low and behold my card is actually working good. It does not get hot when reading ( not as hot as the other 2 anyway) and I can see a big time difference in speed. So I guess its true, the third times a charm in the case of these 64 gb Sandisk Ultra cards.
Big thanks again to nicholi2789 for pointing me in the right direction!
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Glad you figured it out man. I didn't really do anything except to say keep trying. Lol. Good deal though.