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Corrupt SD Card issues

Is anyone else having issues with their sd card corrupting? I have an 8gb class 6 transcend card and it has corrupted 3 times in the last month. I always unmount the card in windows before unplugging the phone. It seems to do it when I'm writing to the sd card from the phone.
The first time I noticed it was when I deleted a picture with built in photos app.
The next time was today when I made a nandroid backup before applying an update (theme). The nandroid backup finished and when I went to apply the update it came up with an error (I didn't reboot between the backup and applying the update). I reset the phone and the sd card was unavailable.
At one point I did have the card partitioned with the apps on one partition. When it corrupted I reflashed the phone back to 1.42 and left the apps on the phone. I went back to one partition and left it at that (fat32).
I don't know if I just have a bad card or something else is going on. I never had any problems with 1.41. However because it did it while doing a nandroid backup would that rule out the software version?
I would like to find a solution, as I don't trust the card anymore without backing it up frequently.

i've had it happen once (files names corrupted) but assumed it was down to the card as i had the same happen when it was in my N95, i've now bought a new card and i'll see how it goes.

When mine goes down, it seems like it kills the partition. When I open a disk manager I don't see a partition on the card anymore.

Hey axion,
Yea your card is pretty much dead... this also happened to me yesterday on my 4 gig card... yyour card will still work however reformatting or creating anymore partitions won't help bring it back.. for future update.zips or recovery boots upload your update files to your stock 1 gig card.. remember to always safely remove hardware with any card mounted to the to a computer..

YES - and not only have I had the same problems, it's with the same brand card! Transcend 4 GB Class 6.
My phone started having issues where I installed an application and it would act wonky, then if I tried to reboot it'd lock up into an infinite loop.
The last couple of times, I solved the loop by doing a fsck on the partition in GParted (booted into a GParted Live instance from a laptop using a USB stick). The problem reoccurs though, making me think there's something problematic with the card.
There's an app in the thread on the cheap 8 GB cards (of which I'm holding my recently received shipment . There's an app in that thread used to test write performance, but it does some crude error checking, and I had an issue when I did that test.
I'm going to do a partition clone and report back.

my dodgy card was 4GB Kingston, one interesting problem i had with it was video refused to play, i could read and write the file fine but android would refuse to play it and meridian video player would report the wrong pixel size, time and codec which had me confused all last weekend.

I'm also frequently having problems with my 8gb card (http://www.newegg.com/Product/Product.aspx?Item=N82E16820211341). Every few days I find myself firing up Ubuntu to fsck it and I always find errors. I often discover them when looking for a file on the phone (I usually do a find / | grep whatever and notice that I get "stale file handle" errors).
Should I get a newer/better card? I'm happy to pay more for a better one. I didn't know this brand, but it was the only class 6 I could find. If Sandisk made a faster card I'd get that, but I can only find a class 2. I have a 16gb Sandisk but it is only class 2 and therefore not good for apps, which is what I'm using the sdcard for.
If anyone can recommend a better one, I'll give it a try.
Does a 16gb class 8 exist yet? What about a 16gb class 6?

I just moved to the same card you have, mlevin - so I'll post back my experiences if I'm seeing anything.
I'm wondering if maybe moving the caches to SD isn't the greatest idea, since these devices aren't meant for continuous writes. If I have more issues, I might just move the caches back to the onboard memory.

giantcrazy said:
I just moved to the same card you have, mlevin - so I'll post back my experiences if I'm seeing anything.
I'm wondering if maybe moving the caches to SD isn't the greatest idea, since these devices aren't meant for continuous writes. If I have more issues, I might just move the caches back to the onboard memory.
Click to expand...
Click to collapse
Yeah, that worried me as well, so I moved my caches back to the main storage and only have app, app-private and data symlinked to the card.

If you are having problems after moving apps and data to your ext2 partition, you have to push the original init.rc and mountd.conf back onto the phone so you can wipe to card fully and restore it to the FAT32 file system.

I had a similar problem on my tmobile wing (variant of the Atlas which is a modified version of the Herald) running Windows Mobile 6 and Windows Mobile 6.1. I think it was also when I used the SD card as a place to store cache for PocketIE. Maybe that's the issue, using it as cache storage. (This is my theory, not something that has been confirmed.)

g1 sd card deletes itself
I am on my 4th sd card. I am not sure what is corrupting/deleting my data. I can copy over some music/video/pdfs/wtfevers and it'll stick around for awhile. Then BAM, music folder empty(had 1 gig of music in it). BAM, 1 of 3 video files corrupted. OH wait, now all 3 are gone. awesome. I keep a backup on my pc so I can copy it all back over once it goes south. I have the doodledroid drawing app on my phone and the folder will go corrupt - not allowing me to save an image until I delete the folder so it can reinitialize(create a non-f'ed up folder). Also, my picture thumbnails get f'ed so I have to delete that folder so the G1 can remake a new non-corrupted set. My PDFs disappeared about 3 days ago. Cards all formatted fat32. blah.
Frustrating.
I have root
kila-user 1.1 PLAT-RC33
Anyone else find a solution?
BTW, my sd cards were:
sandisk 2gb
sandisk 2gb
PNY 4gb (current)
Lexar 4gb

mlevin said:
I'm also frequently having problems with my 8gb card (http://www.newegg.com/Product/Product.aspx?Item=N82E16820211341). Every few days I find myself firing up Ubuntu to fsck it and I always find errors. I often discover them when looking for a file on the phone (I usually do a find / | grep whatever and notice that I get "stale file handle" errors).
Should I get a newer/better card? I'm happy to pay more for a better one. I didn't know this brand, but it was the only class 6 I could find. If Sandisk made a faster card I'd get that, but I can only find a class 2. I have a 16gb Sandisk but it is only class 2 and therefore not good for apps, which is what I'm using the sdcard for.
If anyone can recommend a better one, I'll give it a try.
Does a 16gb class 8 exist yet? What about a 16gb class 6?
Click to expand...
Click to collapse
mlevin: I have that card. It's been fine...until I believe the other day. I was running 5.01H w/ apps to sd and my battery had died so I charged it. Upon turning it on the android screen kept looping as though it wasn't mounting the card. Worse came to worse and I had to end up reformatting the card and starting from square 1. Now that I reformatted it, I'm getting "insufficent space" errors when trying to install paid apps even though I did everything right.
I'm wondering if it is the card.....

[Q]: Applications not loading from Storage Card

All of a sudden apps on storage card fail to load.
After a few reboots they reappear at random, but disappear again on reset.
Did not have that problem with stock, but after flashing Infused 1.14 (and on) the issue appears even with the (rooted) stock rom.
Any ideas?
I am trying to determine if I need to return and replace the phone before I lose the option.
Thank you in advance.

Answering the question by myself, in case others encounter the same issue.
The external card had something corrupted, and when the system was mounting it, all mess ensued.
Backed up all the data and reformatted.
System appears ok for now

I just had this same problem or at least something very similar to it. Initially I thought it was the 32GB SD card being too big since I read Android had a 16GB external card limit. But those posts were from a year ago and when I searched deeper I read that 32GB cards were being use without size problems now. There was one issue that seemed to affect some people and that was that android could have problems formatting a card that big and that's how I installed it in my Infuse initially- I let the Infuse format it, then popped in in my Macbook Pro (in OSX) to copy over the contents from the previous 8G card. I believe I have hidden files set to show, so I should be copying over everything- though, could this method of upgrading the card be a problem too?
It worked for a couple days, but last night during a reboot I tried to access the app tray and didn't know the card was still being scanned. It froze and I couldn't get past the secondary media scan after many tries. I didn't realize that apps were being automatically installed to the card.
Anyway, I was gonna return the card, but after reading your post, I'm thinking again about corruption due to poor formatting as the problem, so I'll try it again when I get home. Thanks for your post. I really want to be able to use this larger card so I'm keeping my fingers crossed this will solve the problem.
BTW, how did you format the card? I have Win7 x64Pro on my MBP as well if I need to use windows, but did you use FAT, FAT32, ExFat? I'm still a 'droid noob ;P. Thanks again!
-- Infuse 4G Rooted with stock ROM

[Q] Cannot delete or add to SD card

A few days ago, I tried taking some pictures with my Droid Charge and the pics would not save. I tried in the stock camera app and in CameraZoom EX. CameraZoom gave me an error message "failed to save photo to SD car (error code=2). I figured I was out of space.
My Titanium Backup scheduled backup did not run the next day. So, I assumed I was out of space.
I connected the phone to my PC and deleted some pics and music. WHen I was in WIndows explorer, it said I had about 2 GB free after doing all of this.
When playing music today, I noticed files that I had deleted before still present on the phone. I thought this was weird. I went back and checked and all the stuff I thought I deleted was still there.
I searched on the CameraZoom EX error code 2. It directed to remove and reinsert the card and reboot. I tried that. I have tried unmounting and then mounting with no success either.
My phone seems to be working fine, but I cannot delete or add anything to the microSD card (the original that came with the phone). It does not matter if I use my WIndows 7 laptop, desktop, or various file managers on the phone itself.
ANy idea what is going on?

To me, it sounds like the SD card is going bad. Not a common occurrence but it can happen. You're lucky you can still read from it... I would suggest getting a new SD card (Verizon might even give you a new one free) and copying your data to it before sectors start going bad. By the way, how did you manage to full up 32 gb?
Or I could be blowing this out of proportion and it's just a matter of write protection on the card.
Sent from my SCH-I510 using xda premium

Another option is to copy everything off the SD card, format it, and try to write everything back. Sometimes a format can joggle a bugged card.

It is mostly music that I have on there. I am not sure how write protection would have gotten on the microSD card or how I would remove it. It does not have a physical togge like an SD card does.
I think I may have to try re-formatting. Ugh.

It is mostly music that I have on there. I am not sure how write protection would have gotten on the microSD card or how I would remove it. It does not have a physical togge like an SD card does.
I think I may have to try re-formatting. Ugh.

Corrupted SD card. Call VZW and be nice on the phone, explain the situation, hopefully they send you a new one.

Hmmm, this is interesting. I cannot even format the microSD card. I tried to do it through Windows Explorer. It looked like it worked. I then tried to copy files back on and it choked halfway through on a movie, I think.
Anyway, what was more interesting is that when I looked at the drive again, everything was back where it originally was. So, the re-formatting must not have actually worked.
I then tried to erase the SD through the options in Android. I unmounted. I then selected Erase SD card. After rebooting (to just be safe), the SD card still is untouched.
THis microSD card has become an impenetrable force. More realistically, it must have write-protection enabled somehow as that is the only thing I can think of.
The question is how do I find out if write protection is enabled and how to disable it? Any ideas are appreciated. Thanks.

[Q] Anyone else having issues with corrupted microsd cards?

I've tried 2 different Sandisk Ultra 64GB microsd's...the first I formatted inside the phone.....the 2nd I took straight out of the packaging and put into the phone..in both cases after a random amount of time I found the microsd corrupted. In the most recent case I tried putting some books onto the card via adb push only to have it inform me that the sdcard was a "read only filesystem"....I then went into es file explorer and tried to browse the card...the "Android" folder was still readable but all other folders now appeared to be some type of file because when I clicked on them it popped up a panel asking me to tell it what sort of file it was....text, video...etc.....after rebooting the phone it would not even mount the sdcard.....I've taken it out and put it on my laptop to run an fsck (linux version of chkdsk) on it and it's finding all sorts of issues:
/Android/data/com.sand.airdroid/********.***
Start cluster beyond limit (4294967295 > 2046978). Truncating file.
/Android/data/com.sand.airdroid/********.***
Directory has non-zero size. Fixing it.
/Android/data/com.sand.airdroid/********.***
Start cluster beyond limit (4294967295 > 2046978). Truncating file.
/Android/data/com.sand.airdroid/********.***
Directory has non-zero size. Fixing it.
/Android/data/com.sand.airdroid/********.***
Start cluster beyond limit (4294967295 > 2046978). Truncating file.
/Android/data/com.sand.airdroid/********.***
Directory has non-zero size. Fixing it.
/Android/data/com.sand.airdroid/********.***
Start cluster beyond limit (4294967295 > 2046978). Truncating file.
/Android/data/com.sand.airdroid/********.***
Directory has non-zero size. Fixing it.
/Android/data/com.sand.airdroid/********.***
Start cluster beyond limit (4294967295 > 2046978). Truncating file.
etc....
As much as I have loved the phone if it's going to continuously lose data I'm going to have to send it back. The first microsd came out of my old phone and had worked fine in it....to avoid issues I let the phone format it....sandisk is THE name when it come to sd cards in my opinion so I have a hard time believing it's any sort of quality control issue...especially since I tried two different cards...the 2nd one being brand new out of the packaging. Comments appreciated.

I am using a Samsung microSDXC 64GB card.
I formatted it on my PC before using it.
So far, I haven't had any problems.
Loaded pictures, ringtones and a number of apk's to install.

Format the SD card on your pc and format to fat32 instead of exfat. Use the instructions from this link.
http://forum.xda-developers.com/showthread.php?t=1773735
Sent from my Alcatel OneTouch Idol 3 using Tapatalk

Shodan5150 said:
Format the SD card on your pc and format to fat32 instead of exfat. Use the instructions from this link.
http://forum.xda-developers.com/showthread.php?t=1773735
Sent from my Alcatel OneTouch Idol 3 using Tapatalk
Click to expand...
Click to collapse
Your right, I forgot to mention that I formatted as fat32.
hope it works for you, famewolf.

tkalli said:
Your right, I forgot to mention that I formatted as fat32.
hope it works for you, famewolf.
Click to expand...
Click to collapse
While I'm willing to try it I would think formatting it on the PHONE would ensure it was in the format it needs to be.....however linux by default uses the fat32 (or fat 16/fat12 depending on size of media) filesystem when fat is chosen. It doesn't have support for exfat. I'm going to try picking up a cheap 32gb from PNY or some other manufacturer than sandisk and see how it behaves.
Thanks for the replies!

I have a new SanDisk 64gb Ultra that's been working fine for the past week. Straight out of the package into the phone (and then formatted).

Mes3 said:
I have a new SanDisk 64gb Ultra that's been working fine for the past week. Straight out of the package into the phone (and then formatted).
Click to expand...
Click to collapse
Do you ever use adb to push files to the phone? It seems whenever the corruption is noticed I have either just put some file on...am in the process of putting files on or just put some on recently via adb push <filename> /storage/sdcard1/<folder> If not what most common method do you use to get files from your pc to your phone storage?

famewolf said:
Do you ever use adb to push files to the phone? It seems whenever the corruption is noticed I have either just put some file on...am in the process of putting files on or just put some on recently via adb push <filename> /storage/sdcard1/<folder> If not what most common method do you use to get files from your pc to your phone storage?
Click to expand...
Click to collapse
I just plug it in , and Windows 7 mounts it as Portable Media Player - and from that point on, just copy to, or delete from, the folders. Works for both internal storage, and the micro SD. So far no issues. I have a cheap and slow 32 GB card .

Sandisk 32GB class 10 user here with no issues. I did have some issues when I connected my phone to the computer through a non-OEM USB cord though...

Mes3 said:
I have a new SanDisk 64gb Ultra that's been working fine for the past week. Straight out of the package into the phone (and then formatted).
Click to expand...
Click to collapse
Same here, a Scan Disk Extreme SDXC 64GB UHS-I/U3 right out of the package and into the phone. No problem storing media or apps to it here thus far.
---------- Post added at 12:32 PM ---------- Previous post was at 12:08 PM ----------
Mes3 said:
I have a new SanDisk 64gb Ultra that's been working fine for the past week. Straight out of the package into the phone (and then formatted).
Click to expand...
Click to collapse
Same here, a Scan Disk Extreme SDXC 64GB UHS-I/U3 right out of the package and into the phone. No problem storing media or apps to it here thus far.

Same got an ADATA 64GB SDXC Uhs1 and straight into the phone from package and has been working fine
Sent from my 6045I

My experience was great until last night. I don't know what happened but I downloaded a new app (Cloud Player by doubleTwist) and as it's nearing the end of reading the music on my SD card (a SanDisk Ultra microSDXC 64 GB), it suddenly stops recognizing the files to the point where the phone was no longer reading the SD card at all. I've tried remounting the SD card but to no avail (even after a factory reset). Interestingly enough, I /was/ able to mount it on my old phone (Note 3) and it worked without a hitch, the card wasn't formatted or anything of the sort and the data was perfectly intact. I tried mounting another SD card I had lying around on the Idol 3 and it worked just fine too. So, what the heck? I sent an email to doubleTwist considering that the evidence points towards the problem being a combination of the phone and the app but I'm at a loss here 'cause I don't see how I'm gonna get the Idol 3 to mount my SD card, even if the app is fixed. Maybe get a replacement from Amazon? I'd prefer to avoid that seeing as how my model hasn't been plagued by the issues detailed on this forum (aside from the buggy Tap to Wake function that is).

kevin6876 said:
Same here, a Scan Disk Extreme SDXC 64GB UHS-I/U3 right out of the package and into the phone. No problem storing media or apps to it here thus far.
---------- Post added at 12:32 PM ---------- Previous post was at 12:08 PM ----------
Same here, a Scan Disk Extreme SDXC 64GB UHS-I/U3 right out of the package and into the phone. No problem storing media or apps to it here thus far.
Click to expand...
Click to collapse
Yeah I noticed the corruption only seemed to occur when pushing files to the phone via adb. I'm on linux so it doesn't just mount as an mtp device...I've gone to using other methods to transfer files such as airdroid etc and so far the issue has not occurred again.,

Samsung EVO 64GB corrupted
I had a Samsung Evo 64gb for two weeks everything was fine then one day it changed to a RAW format and I couldn't use it. I have tried everything and don't know what to do.

Hi,
Im having some similar issues with my Idol 3 and the SD cards. First I have a 32gb card that was corrupting all new files stored in it... I formated with the phone, and still the problem continues. So I bought a new 128gb (a PNY) on amazon, making sure specs were compatible, and now it keeps unmounting the SD card couple of minutes after reboot or installed.
So far I have tried:
Format the MicroSD in the phone
Format the microsd in the computer (with partition formats Fat32, ext2, ext4)
make the microsd card with several smaller partitions, down even to 32Gb.
restore phone settings.
factory restore the phone.
Test the MicroSD card in several devices (all worked fine).
Even went to cricket wireless and tried the Micro SD card in another alcatel Idol 3 (worked fine there).
So far, nothing seems to make the idol keep the MicroSD working. It just says "SD card unexpectedly removed".
Any suggestions? Could it be the SD card or the Idol 3?
Thanks.

TheHamOp said:
Hi,
Im having some similar issues with my Idol 3 and the SD cards. First I have a 32gb card that was corrupting all new files stored in it... I formated with the phone, and still the problem continues. So I bought a new 128gb (a PNY) on amazon, making sure specs were compatible, and now it keeps unmounting the SD card couple of minutes after reboot or installed.
So far I have tried:
Format the MicroSD in the phone
Format the microsd in the computer (with partition formats Fat32, ext2, ext4)
make the microsd card with several smaller partitions, down even to 32Gb.
restore phone settings.
factory restore the phone.
Test the MicroSD card in several devices (all worked fine).
Even went to cricket wireless and tried the Micro SD card in another alcatel Idol 3 (worked fine there).
So far, nothing seems to make the idol keep the MicroSD working. It just says "SD card unexpectedly removed".
Any suggestions? Could it be the SD card or the Idol 3?
Thanks.
Click to expand...
Click to collapse
Sadly the answer is "yes"....cause it's more a combination of the two.....I have a samsung 128gb in my idol3 and it runs fine...a 64gb adata also ran fine....a 64gb sandisk repeatedly failed as yours does...and now has failed on a 2nd device so that card is physically bad in some way. You'll basically have to find one the idol3 likes...when in doubt use the brands others have indicated worked for them...I don't recall PNY being listed by someone as "worked for months without issue". I can vouch for Adata and Samsung. An important point to consider is it MIGHT work initially on that idol3 in the store...but more importantly would it still be working 1 month later.....6 months later...etc

I have a 64gb Samsung that corrupted last week after working fine for 4 months. It happened while writing to the SD card. Wife was talking and all of a sudden it stopped saving the pics. Couldn't get anything to read the card so I ended up formatting it in my backup phone. This likely was due to the camera app but thought I'd post just to add my experience

I have a 16gb sandisk from way back in 2012 yet still works lol but I was rinning into some issues this past weekend it kept telling me checking sd card for errors then it would mount and unmount so I rebooted same problem so what idid was to take the SD card out plug it into my PC backup my data even though the data was intact so I backed everything put the card back in turn the phone on and my data was still there I'm not sure if its something related to your issue but right now my SD card is working normally I love it lol

I've got a Scandisk sdxc 64gb since several months in mine and no problem till now.
Envoyé de mon 6045Y en utilisant Tapatalk

Obnoxious Problem with SDXC Card - Card on Computer Works Fine, Phone Wants to Format

Card is a Sandisk 128GB Ultra MicroSDXC A1 card.
Card is formatted exFAT.
Card can be mounted, opened, and read/write with no problems via my laptop when plugged directly (SD slot).
Android (LG G5, LineageOS 15.1) says card is corrupt, is trying to make me format. Card initially set up as "Portable Storage".
Took FOREVER to move music onto this card, as artists had to be moved one at a time or transfers would fail, so I'm trying to avoid formatting.
I've tried rebooting the phone, repairing the file system using TWRP Wipe command (fails with error code 1), and mounting with a clean eject via Windows 10 on my laptop using the SD card slot. Nothing has made an impact, stupid phone still won't allow me to use the card.
If anyone has any ideas why this is happening, or how I could potentially fix this without having to wipe the card, I would appreciate it. This thing has been a PITA since I got it, I thought it would be awesome having such expandable storage on my phone (I'm a weirdo who doesn't use streaming services) but I've had nothing but problems so far. I have to be careful with how I transfer files onto the card or the transfer will take an (appropriately) long time, act like it works, but then the file just won't be there. Now I've finally gotten the card loaded up, and after a routine phone reboot a few days ago, the Android OS is trying to say it's corrupt; This is also making me worry that this will continue being an issue in the future.

Running "chkdsk E: /r" on my laptop is revealing a couple minor corruptions inside the directory, and volume bitmap. It's hanging on verification/completing now.
Is it possible that I have a bad SD card? This thing has seriously done nothing but suck since I've been trying to use it.
Edit: Unless someone tells me otherwise, I'm pretty sure this is a bogus/defective SD card. I simply cannot believe that flash memory would perform this badly. I'm going to return this card (bit of a PITA since I ordered it online) and buy another one locally.