I can't determine the cause, but certain directories & files that I put on sd-ext are disappearing on me, some within hours (wallpaper folder). The other strange thing happening is a lot of my image files (.png icons) become unreadable & appearing to be corrupted. These same files can be stored on internal SD without this happening. I have checked the disk in windows w/o errors.
The only thing I can suspect is, not too long ago I accidentally partitioned my SD-ext to 0mb in CWM.
I am using the lastest Kang CM7.2 Photon Dev Team. Install location: Internal, and "use internal storage" checked.
I once had this same issue with a brand new SD card I bought off of ebay.
It turns out it was a fake sandisk sd card from china. It was a 1 gig hacked to look like a 16 gig, so whenever you would try to write files above 1 gig, the file index would show up but the file itself would be written to nothing leaving a corrupted or missing file.
Never buy sd cards straight from china...
Actually I have bought fake ones from ebay before as well. But I have not done that for years. I bought mine from Newegg. Also I had about 6 gigs on it before w/o issues. Right now I have only a few hundred MBs.
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Hello all..... just a quick one..... I have a HD2, and have recently found that I cannot transfer files onto the SD card without running the chance of them not actually showing up. Sometime they do, sometimes they don't.
By the above I mean, if I transfer a music folder across which contains a dozen or so mp3..... the transfer appears to happen okay.... the green progress bar on the laptop takes the expected length of time and the folder appears in the directory of the HD2.... HOWEVER.... when I open this folder, the MP3s are not there????
I have had this with some other files (usually larger).... they appear to transfer across without problem, but once I disconnect the HD2's data lead and search through the storage card - nothing there!
I have a HD2, running WM 6.5 on thre latest Vodafone rom, and using an unbranded 32gb sd card.
Any help... VERY MUCH APPRECIATED!!!
I suggest you make a complete back up copy of all the contents of your SD card. hben reformat your SD card using the Fat 32 option. Also I suggest you take your SD card out of your HD2 and put it into a SD card reader and use it to reformat your SD card. All you have to do is find the SD card on your computer by going to My Coputer, it will be listed as a mass storage device or a removable drive. Right click it and select format and use option Fat 32.
hingysaid said:
Hello all..... just a quick one..... I have a HD2, and have recently found that I cannot transfer files onto the SD card without running the chance of them not actually showing up. Sometime they do, sometimes they don't.
By the above I mean, if I transfer a music folder across which contains a dozen or so mp3..... the transfer appears to happen okay.... the green progress bar on the laptop takes the expected length of time and the folder appears in the directory of the HD2.... HOWEVER.... when I open this folder, the MP3s are not there????
I have had this with some other files (usually larger).... they appear to transfer across without problem, but once I disconnect the HD2's data lead and search through the storage card - nothing there!
I have a HD2, running WM 6.5 on thre latest Vodafone rom, and using an unbranded 32gb sd card.
Any help... VERY MUCH APPRECIATED!!!
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First, I would try the re-formatting as discussed in the last post. However, did you try transferring via ActiveSync (assuming you were using the USB drive option)? There are two ways to transfer files on the HD2.
Are those files, by any chance, set to hidden?
If your sd card is an unbranded 32GB one bought from ebay it's most probably a fake...This behaviour is exactly what happens if the fake sd card is 2 or 4GB fooling you to think that it's 32GB one. Any file you transfer that exeeds the real storage capacity of the fake sd card will be lost.
stathis95194 said:
If your sd card is an unbranded 32GB one bought from ebay it's most probably a fake...This behaviour is exactly what happens if the fake sd card is 2 or 4GB fooling you to think that it's 32GB one. Any file you transfer that exeeds the real storage capacity of the fake sd card will be lost.
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That makes sense.... it was from ebay, and would account for the corruptions and problems which have occured since I swapped it for my 8gb.
I wonder if I have any recourse through eBay?
I've went back to my old 8gb card and everything working fine now.... duff card - confirmed....!
hi,
i am using htc incredible s.some days ago i tried to make folders in my 8 gb kingston like for movies,songs etc.but to my surprise when i changed from disk drive option to charge only,i culdnot find any video or could play previous videos using mx video player.i again changed the option to disk drive and saw that there was no folder there and lost dir had all the files.any how i changed the card and bought 32gb kingston.but the problem is same.and once this problem araises,i cannot play any video file except which i have made from its camera.i am so depressed here that i am thinking of selling my phone
i am using the stock rom 2.3.5 gingerbread.plz help me out.
no help from any 1
i figured out the problem.but again a little confused.my sd caed doesnt seem to work properly.how to check and fix the sd card?
I think corrupted or "lost" files go in that folder. Did you unmount the card on the PC before switching from disk storage to charge only on android?
Sent from my Sensation using XDA
I think You may try to use formating tool from this site www.sdcard.org It usually helps with bigger SD cards.
Worth to try I think.
Connect your phone to your computer in mass storage mode, or preferably use a card reader and copy all your data from SD card to a backup folder. Format your SD card to FAT32 with 32kB cluster size. You can use the normal right click>format option in Windows/Linux/Mac. Uncheck Quick Format (in Windows) and let it do a full format. It'll take around 20-30 minutes for a 16GB card. This will fix any filesystem errors that are causing data loss. Once that's done, copy back all your data as it is back to the SD card. Now your card should work fine for a long time. SD cards tend to get corrupted over time, especially with Android, so doing this once in a while is helpful, whenever your card gives you any problem. I have had this same problem a few times and this fixed it for me.
I have data corruption on sd too but it happens often to data of any type/size and I believe that the corrupted data are moved to LOST.DIR They have no extension and cannot be opened or recognized. So I'm losing apps, photos, videos, anything. My device is an LG P500 and the sd card is a Transcend 4gb class 6.
What cluster size do you recommend for a 4 gb sd? 4kb is the default for its size and I believe that 32kb is too much for such a small card.
Today I've run into a curious problem, and I've finally ran into a brick wall in solving it.
I have the Samsung galaxy S II Skyrocket, and I have a 16GB micro SD card that I just bought from wal-mart for it. The card has been awesome since I got it.
Earlier I was cleaning up stuff because I was running out of space, so I moved a bunch of stuff from the SD card to my laptop and deleted it off my sd card. When I went to move my stuff back over after having made my changes to it... the sdcard said it only had 5GB of memory left. That's weird, because I had just moved 10GB worth of stuff off of the sdcard. So something must be up.
I rebooted my phone and wiped the caches just to make sure it wasn't keeping stuff like that on it. I also got rid of the LOST.DIR folder. I would go through the whole card in Ubuntu terminal using ls -lh on every folder and there was no way that card only had 5GB of free space on it. So I went ahead and reformatted it.
This is where things went wrong.
Foolish me, and this was a mistake on my part, I chose ext 4 for whatever reason as opposed to FAT32. So now I have a 16gb sdcard that is blank and unreadable by my phone. My phone offers to format it, but the format does nothing. Formatting it in CWM also accomplishes nothing. And my other machines won't recognize the Sd card either, only my phone. My phone could see it, but say that it can't use it. Sdcard is blank or has an unsupported filesystem would be the error.
At least my phone could see it though, so I thought there must be a way to save this thing. My laptop couldn't recognize it for some reason, so using Gparted was out of the question.
After a couple attempted reformats and searching for apps that could format sd cards (I couldn't seem to find any) I went for a last ditch attempt and used the partition tool in CWM that I had read about some weeks ago for a completely unrelated task.
And voila I can see the card again. Except.. CWM partitioned 4GB, and those 4GB of data seem to be lost. No matter what, using windows, my phone, Gparted in ubuntu, they all say that the card has a max size of 10.7GB now as opposed to the 14.7 or so that it was supposed to have.
And now I'm stumped. Did CWM goof up and instead of partitioning off 4GB, it actually just destroyed 4GB and somehow made the sdcard work again at the cost of 25% of the data it is supposed to hold? Or is the way CWM partitions it something whacky where the 4GB is there but it is impossible to see it or access it or something..
tl;dr SD card had issues, repartitioning in CWM made it work again. Instead of having 16GB, it has 12GB. How to get those 4GB back?
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.
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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?
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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.
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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.
In the future I will buy a 128GB SD and will make a mod based on the "galaxy note 4 with 512GB storage." I'm just waiting to get my adapter purchase on Aliexpress.
questions:
I may have problems with Android MediaScanner?
The durability of the memory card can be affected by the huge amount of files that will be kept?
I had a SanDisk 64GB for a few months, on a night I downloaded some files, which in the end amounted to 20GB in the morning I could not transfer these files via MTP or an old adapter I have, then ziped files and sent to my PC. Shortly thereafter I formatted my SD and had the error dirty volume, and SD boot partitions were corrupted in accordance with the Hex Active Disk Editor.
This is my third or fourth SD, had two 32GB and 64GB only one. It's really boring to me swap memory card each semester.
Do you recommend using an SD card in FAT32 or exFAT to store a huge number of files?