First of all, I am very aware this has been asked many times and will be asked many times after this. I have read MANY threads both here and elsewhere and have never seen a definitive answer (which may not exist)...
My phone has started telling me about once per day that my exernal sd card may be damaged and unmounting it. If I reboot, it works fine until the next time it decides to tell me that again. I have checked it several times with Check Disk on Windows and it never finds any problems. I am currently using a SanDisk 64GB class 10 card purchased off Amazon. Yesterday, I copied everything off the card, completely formatted it (not the quick format and in the required Fat32 format) using the GUI version of Fat32format and copied everything back to the card. Both before and after formatting, Check Disk found no issues. Today, I received a notification that my SD card had unexpectedly been removed (it had not). A few seconds later I received notification that my SD card may be damaged and may need to be formatted. How in the hell Android can tell me that a SD card is corrupt after it already told me that it was no longer in my phone is a mystery to me...
This is the second time I started experiencing this issue. The first time was with a 32GB class 4 SanDisk card that I think WAS becoming corrupt because Check Disk would find issues with that card, so I ended up replacing it with the card I am using now (less than 2 months ago). So... is my card failing? Or is there any reason that Android would report an SD card damaged when it is not?
I would really prefer if the card was failing, because then I would at least know how to fix the issue (get a new card). However, I am not willing to get a new sd card every couple months just because Android has sd card issues. The only recent (major) changes I have made to my phone before this issue started up again was installing the V6 SuperCharger script and changing from Busybox v1.20.0 to Busybox v1.20.2. I am likely going to remove those and see if this clears up, but is there a reason that Android would be falsely reporting a sd card as damaged or is it a sure sign of a failing card?
rsngfrce said:
but is there a reason that Android would be falsely reporting a sd card as damaged or is it a sure sign of a failing card?
Click to expand...
Click to collapse
Mostly happens when the SD card is not what it says, it is, (like imitations) , anyway here is some insight
Related
I got my Dell Streak second hand but the 16Gb card that came with it wasn't working. Not that the seller had mentioned it.
So, I've actually bought 2 16GB micro SD cards and both have had the same problem. The device recognises it upon first installation but when writing further data upon it, e.g. connecting it via USB or taking the micro SD card out and using an SD adapter, the files become corrupted. It doesn't matter what type of file it is, it all gets corruped and it says that the SD is damaged when the phone is trying to mount the SD card again.
This is the 3rd time it has happened so it's no coincidence.
My 4gb that I had in my previous XDA Orbit has been working fine ever since I got my Streak with no problems whatsoever.
Am I missing a driver for 16gb+ SD Cards?
EDIT- Just had a thought. I was transferring all my stuff from my previous card that was in my Streak to the new one, could this have caused any problems? I assumed you could transfer all SD data from one card to another and still have all the apps and data working?
EDIT x2- Had another thought! It seems like when things get put onto the root of the SD card, it causes corruption but when it gets put into a folder, it seems okay. Now this isn't a problem when the device writes things to the SD card- they get put into the appropriate folders, however I have never had this problem with the aforementioned 4gb card and always write pictures and movies onto the root of the SD card to view without any problems.
Hello,
Hoping someone can help with this issue.
My phone is an international galaxy s3. Bought september 2012 with a class 10 sandisk 32GB SDCard. Around november, suddenly, phone keeps displaying "preparing sd card", "damaged sd card", etc. when phone wakes up from sleep, this causes media process to continually run in the background, killing battery. Force stopping the Media process doesn't help as after sometime, Media process will run again.
I solved the issue by buying another SDcard, same brand, class 10 32GB as well.
And now, after 2 months, same issue reappeared with my new SD card! Displayed the same preparing sd card issue, and now my phone seldom deep sleeps because of the android.process.media process. It keeps sending wake locks.
Anybody knows what the issue is and how to solve?
Thank you very much
Same problem here, I'm on my third SD now and after a week or so the same problem happens?
Carry out a proper test of the SD card .
http://fightflashfraud.wordpress.co...ld-standard-in-detecting-fake-capacity-flash/
jje
toughthrone said:
Hello,
Hoping someone can help with this issue.
My phone is an international galaxy s3. Bought september 2012 with a class 10 sandisk 32GB SDCard. Around november, suddenly, phone keeps displaying "preparing sd card", "damaged sd card", etc. when phone wakes up from sleep, this causes media process to continually run in the background, killing battery. Force stopping the Media process doesn't help as after sometime, Media process will run again.
I solved the issue by buying another SDcard, same brand, class 10 32GB as well.
And now, after 2 months, same issue reappeared with my new SD card! Displayed the same preparing sd card issue, and now my phone seldom deep sleeps because of the android.process.media process. It keeps sending wake locks.
Anybody knows what the issue is and how to solve?
Thank you very much
Click to expand...
Click to collapse
1st u backup ur sd n ex-sd card deta on pc, after that u format both sd card then u flash new fw(download via sam mobile) via pc odin , may be its slove ur problem brother.
sam77744 said:
1st u backup ur sd n ex-sd card deta on pc, after that u format both sd card then u flash new fw(download via sam mobile) via pc odin , may be its slove ur problem brother.
Click to expand...
Click to collapse
I managed to temporarily solve the problem by buying another sd card (my 3rd SD as well), but this time I bought a class 4 16GB one.
One thing I noticed, when using ES file explorer, and checking the last modified of the SD cards (the old ones), it shows as 1970-01-01. When I reformat it, it goes back to the correct last modified date, but over time it goes back to 1970. This new SD card still shows the correct last modified date so far.
@JJEgan: I did try that SD card test tool from before (1st SD card) and didn't show any problems. I doubt it is a fake one though, I bought it in Korea with the hologram packaging and all, the 2nd one I bought in the Philippines but also looks legit (using SD test tool app also seems fine for both).
@sam77744: I already tried a factory reset. and formatted SD card in the PC, in the galaxy s3 itself, same problem.
Is it possible for the phone to mess up with the SD card over time? In such a way that even if you format the SD card lots of times, it will really not work well with the phone anymore?
By the way, my phone ran 4.04 then upgraded to 4.1.1 over the lifespan of the 1st sd card, then 4.1.1 and then upgraded to 4.1.2 over the lifespan of the 2nd sd card. Stock ROM, never rooted, updated 4.1.1 via Kies and 4.1.2 via OTA.
Will be grateful to any ideas on what might be wrong and how to permanently fix, I can't keep buying new SD cards every month
Download the SD Formatting tool, available for free from the manufacturers association's website. I've had several cards over the years that corrupted after formatting in the phone, but were okay after using the tool.
I'm not convinced that class 10 cards are the best option for phones, yes for cameras where only a small number of large files of written, but in phones where a large number of small files are written a class 6 might be better for real life use.
I have a 64gb Sandisk Ultra SDXC card formatted in exFAT. I had been using the card in my NOTE 2 with no issues. I normally keep all of my movies, music, emulators, and ROMs on it so I can keep space free on my phone. This morning I got my phone setup the way that I wanted it and I decided to install the SD card into the new phone. Everything seemed to go okay, I got a message telling me that it was preparing the card, but after the message disappeared, the SD card was not recognized. There were no error messages regarding the card, it simply did not show any additional storage on the phone and all options regarding the card with exception to "Mount SD Card" and "Format SD Card" were not accessible.
I took ejected the card and formatted it to NTFS to see if that would make a difference and when I reinserted it into the (M8), it recognized it as a blank SD card that was not in the proper format. It prompted me to format the card while still installed in the device, which it did without error. After the format was complete I received the same "Preparing SD Card" message that I received before, but after the message disappeared, the card still didn't show up as additional storage.
Through a root browser I have the option to enter extSD, but nothing I put on the card is there. I then took the card back out, installed it into my Note 2 and it worked with no problems at all. Finally I ejected the card, reinstalled it in the (M8) again, it gives me the same prompt as before, but after the message disappears the additional storage does not show up and all options with exception to "Mount SD Card" and "Format SD Card" are inaccessible once again.
I have tried the fix found here: http://forum.xda-developers.com/showthread.php?t=2700310 to no avail.
Does anyone have any ideas why this might be happening and is there any way that I can solve the problem?
Phone Info:
- HTC One (M8) 32gb
- Unlocked Bootloader
- Rooted Stock KitKat 4.4.2
- Jmz WP Removal Custom Kernel
If you have a USB card reader, try formatting the card as FAT32 with your computer.
I believe most cards come pre-formatted as FAT32 by default. I've always just put the cards in my Android devices without any formatting, and they work just fine.
Not sure why the device's default format didn't work, but possibly formatting on a computer will get it working.
It's possible that SD may be dying.
I had a 32gb card that a friend left with me to fill with movies/etc, but since I wasnt going to see them for a while, I decided to use it with my old LGOG. Not 3 days later, I get what you described, and now the card isnt even seen by Windows.
Even with formatting the card, it would work again for a few minutes, but as soon as I tried copying more than ~3 gigs, the card would go corrupt again.
SD cards dont last forever yo.
OMGMatrix said:
It's possible that SD may be dying.
I had a 32gb card that a friend left with me to fill with movies/etc, but since I wasnt going to see them for a while, I decided to use it with my old LGOG. Not 3 days later, I get what you described, and now the card isnt even seen by Windows.
Even with formatting the card, it would work again for a few minutes, but as soon as I tried copying more than ~3 gigs, the card would go corrupt again.
SD cards dont last forever yo.
Click to expand...
Click to collapse
I just tried it out a few minutes ago. I don't know why, but it's working perfectly fine in Windows, a Note 2, S3, and an S5. I have no idea what's going on, but no matter what I try, nothing makes it work on this phone.
redpoint73 said:
If you have a USB card reader, try formatting the card as FAT32 with your computer.
I believe most cards come pre-formatted as FAT32 by default. I've always just put the cards in my Android devices without any formatting, and they work just fine.
Not sure why the device's default format didn't work, but possibly formatting on a computer will get it working.
Click to expand...
Click to collapse
I was able to get the card formatted form exFAT to FAT32 and it looked like it was going to work, same with NTFS. I inserted it into the phone, waited for it to prepare the card and this time I got a message telling me that the SD Card was damaged, but I could format it in the phone. I followed the instructions, just as I had before, it went through it's thing, got to the part where it attempted to mount the card, appeared as though it was going to mount, and then nothing, just like with everything else. I have no idea what's going on.
I ran some tools on it and the card appears to be in good condition, so I have no idea what to do. I don't know if it's the phone, or if it is the card. I'm thinking about buying a 128gb card, but I'm afraid if I do, I'm going to find myself in the exact same position that I'm in now and out a lot of money to boot.
I'm loosing my mind with this thing.
Surely you must know someone that has a MicroSD card you can try. Trying another would pretty much eliminate the card as being the issue (and possibly the card tray or similar component on the phone). I have at least 2 "spare" MicroSD cards laying around.
I had a similar problem few weeks ago and I did format my 64gb card with GUIFORMAT on my win 7 PC and since then no more problem. Here is the link: http://www.realmodscene.com/index.php?/topic/323-gui-format-fat32-drive-formatter/
Thank you. I'll give it a shot right now.
pixelsphotopro said:
I had a similar problem few weeks ago and I did format my 64gb card with GUIFORMAT on my win 7 PC and since then no more problem. Here is the link: http://www.realmodscene.com/index.php?/topic/323-gui-format-fat32-drive-formatter/
Click to expand...
Click to collapse
You, sir, just won all my Internets. I don't know what it was about that app, but it worked like a champ the first time around. I don't get it either. I had used so many tools to get it to FAT32, but this one did the trick. I formatted the card, inserted it...was totally waiting for it to not work, and I noticed "Unmount SD Card". I read it and thought "hmmm, that's not right", lol. Then it dawned on me that it worked. Copying folders over to it now. Thanks so much, bud. I really owe you one.
-J
Nice. I've heard that the native Windows formatting tool is not the best (although its always worked fine for me), so this might be one of those instances.
pixelsphotopro said:
I had a similar problem few weeks ago and I did format my 64gb card with GUIFORMAT on my win 7 PC and since then no more problem. Here is the link: http://www.realmodscene.com/index.php?/topic/323-gui-format-fat32-drive-formatter/
Click to expand...
Click to collapse
Thanks. I had the same problem with a brand new 128GB card with only this phone (HTC One E8 Dual). Until I found this. So far working like a charm. You ARE a star.
First of all, im using a 4.1.2 stock and my device is rooted
So i had an Sandisk 64 GB class 10 for some time which one day became a "read - only" card...
So afterwards i bought a Samsung 32 GB class 10 which I found out also had problems because i could put about 10GB of files and everything more that 10 GB turned into wierd folders that their name starts with "μ" and there where no actual content inside and i couldn't delete them.
So now i'm at my third try, again with a Samsung 32 GB class 10 which also has the same problem, only now i can write on it about 20 GB of data before files start to get curropted.
Just want to say i bought all 3 SD card from Ebay, and though i guess they might be fake (tons of bad luck), after searching the web I found out there are many GS3 users with the same problem...
So i just want to put an end for this question..
Is GS3 frying SD cards? is there something i can do to stop it from destroying SD cards? can i fix somehow the SD cards?
thanks alot!
Hi! when you are asking a question you should include details such as operating system(4.1.2 , 4.3, 4.4, stock, rooted and so on) and file system. I noticed while searching google that the majority of "s3 fried sd cards" so to speak are sandisk and in your case it seams that there is no such "limitation". Maybe if you give more details someone might be able to help.
vader20 said:
Hi! when you are asking a question you should include details such as operating system(4.1.2 , 4.3, 4.4, stock, rooted and so on) and file system. I noticed while searching google that the majority of "s3 fried sd cards" so to speak are sandisk and in your case it seams that there is no such "limitation". Maybe if you give more details someone might be able to help.
Click to expand...
Click to collapse
Well, I edited my post.
you can see the first lines contains the detailes you described.
can't think of any other relevant details.
What type of file system do you have on sd card? is it fat32 or Ext4?
vader20 said:
What type of file system do you have on sd card? is it fat32 or Ext4?
Click to expand...
Click to collapse
not sure. I formated it with my GS3 and the computer won't recognize it without reformating it.
Worst case scenario is your phone somehow corrupted the sd card and that is that. I had a similar problem with my usb flash drive which i used on-the-go and unmounted it before removing it but when it happened i didn't make a backup(as always) and got stuck with a nice keychain. If you have the possibility to format it under windows with a card reader and choose fat32 at least you have a working sd card, otherwise use your warranty for the sd card(if you have one) and always BACKUP.
vader20 said:
Worst case scenario is your phone somehow corrupted the sd card and that is that. I had a similar problem with my usb flash drive which i used on-the-go and unmounted it before removing it but when it happened i didn't make a backup(as always) and got stuck with a nice keychain. If you have the possibility to format it under windows with a card reader and choose fat32 at least you have a working sd card, otherwise use your warranty for the sd card(if you have one) and always BACKUP.
Click to expand...
Click to collapse
but do you think that my device is malfunctuning in a way that will keep frying my SD cards..?
well since this is the second sd card i personally send it on warranty(as hard as it may be without the phone) because it seems that something is not right with the contacts of the card reader circuit board. I read somewhere that on some phones the card reader slot had some contacts partially detached and so the sd card kept getting corrupted. Search a bit on google about this issue and take into consideration using your phone's warranty. Best of luck!
That is a bit strange. Unless you're used to remove the sd card with the phone accesing to it (no safe removing) or removing the battery while the phone is running, that's absolutely not normal.
I have my 32GB sd since 2010 and I never had any problem. I formatted it this year because it had tons of useless data and I liked to have it clean.
Of course it's not from Ebay! That is bulls**t and use to fail suddenly.
I was in ES file explorer trying to move files to my external sd card and all of the sudden I get an error saying task failed. I can't delete or copy anything to my external sd card now. It's a 64 gb Class 10 Sandisk Ultra micro sd card. I formatted it to Fat 32 a long time ago. I don't know what's going on. And now all of a sudden Root browser in Root Explorer doesn't work either. I can't write anything on my phone. I even reverted back to stock android to see if it was the rom problem and that wasn't it either. I'm completely lost in the dark now.
I'm running CM12 Beta on my G3 if that means anything.
Try getting into it via twrp I had a problem like that a while back and I tried twrp and it did work I ended up wiping via twrp. You can also try putting it in your computer and partitioning it. I my self repartitioned it and just deleted the current one and made a new one. It seems that some roms or apps ect can cause the software in the sd card to become corrupted also try mounting and unmounting it before you delete anything.
If you are rooted you need to download SDfix from the play store. It says kit kat but works with 5.0.X fine. SD write access is still limited in lollipop unless the app creator allows SD access. If you were on zv6 on a custom rom it was probably baked in.
Sent from my LGLS990 using XDA Free mobile app
1619415 said:
Try getting into it via twrp I had a problem like that a while back and I tried twrp and it did work I ended up wiping via twrp. You can also try putting it in your computer and partitioning it. I my self repartitioned it and just deleted the current one and made a new one. It seems that some roms or apps ect can cause the software in the sd card to become corrupted also try mounting and unmounting it before you delete anything.
Click to expand...
Click to collapse
Yeah I tried formatting it and everything. The micro sd card is stuck in read only mode. I think it's dead. I put the micro sd card back into my S4 and my S4 couldn't write to it either. I ran CHKDSK on command prompt and it said that there's a corrupt file on the mciro sd card but it can't repair it because the micro sd card is stuck in read only mode. I tried to format it usng the SDFormatter and nothing is working. I used google and people are saying that when a micro sd card goes into read only mode it means that it's about to die. :c sucks cause it was 64gb and I've only had it for a year.
I had 2 SanDisk 64GB cards go bad soon after I formatted them to FAT32. I don't know why, but it happened. SanDisk could not explain it, but they were really good about replacing the cards.
stopeject said:
I had 2 SanDisk 64GB cards go bad soon after I formatted them to FAT32. I don't know why, but it happened. SanDisk could not explain it, but they were really good about replacing the cards.
Click to expand...
Click to collapse
I would contact SanDisk about it but I got the SD card in October of 2013 from BestBuy as a birthday present and I don't have the original packaging or receipt so I don't have proof of purchase so I doubt I'd be able to get the micro sd card replaced.
Zure said:
I would contact SanDisk about it but I got the SD card in October of 2013 from BestBuy as a birthday present and I don't have the original packaging or receipt so I don't have proof of purchase so I doubt I'd be able to get the micro sd card replaced.
Click to expand...
Click to collapse
Chat with SanDisk. IIRC, they didn't ask me for a receipt, just where and when the card was purchased. It has a lifetime warranty, they will replace it and will even send you a free shipping label.
I have the same problem, I was copying files to my external sd card from internal and all of a sudden it said "moving files failed" and then nothing on my sd card would show up, though on storage information it shows that it's mostly full. But all the files are unreachable until I reboot then everything is fine while I'm listening to music, but if I stop for a while or try to move anything it messes up again. Anyone know of a fix?
I'm on lollipop, but the sd fix app would not do anything for me... Running Danvdh's Google Play Edition Rom
Sent from my GT-I9505G using XDA Free mobile app