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Twice in the last two months my 16 GB Class 6 AData microSDHC memory card has popped up as being "corrupt" and needed reformatting after powering back up from reboot on my Nexus One.
The first time happened on CM 5.0.3.1, the second time was with CM 5.0.4.1 with the UV kernel. Both times, data could not be read either through the N1, my old G1, or my friend's Droid. Thus a reformat was required and data loss ensued.
Anyone else experiencing occasional data corruption on their SD card? Another friend had it happen to his G1 with an 8 GB microSDHC memory card recently, running the latest CM for the G1, also on reboot and battery swap.
Is there a common thread here? Could it be HTC hardware-related? CM software-related? Just coincidentally two bad memory cards? Me using chinese replacement batteries when swapping out? The UV kernel? Not trying to point fingers or throw stones, just trying to get to the bottom of this...just lost some great pics of a recent vacation I just got back from. Suggestions or hints are welcome!
TIA!
this has happened to me a few times but I was still able to get my data through amon-ra recovery. I think it have something to do with an improper dismount of the card.
I'm curious, what brand of memory were your friends using?
I actually had this happen when my n1 was still stock (16gb class6 card)
I put the sd card in a card reader on my pc, everything was intact so I backed it up, reformatted and still had the n1 report it was corrupt. I ended up having to shut down, remove card, boot up w/o a sd card in, then with the sd card back in I never had the problem again
I know I did a full format the very first time, that 2nd time I had done a quick format. I've done a format recently also via amonra for ext partition and still no problems.
I happend to me few weeks ago. After turned it on ... I couldn't do anything because the screen was black and any key or type of touch was useful ... so I removed the battery and at the next start the SD wasn't readable anymore!
sry 4 my bad english!
erikikaz:
i'm running a 16 GD Class 6 AData memcard in my N1, my friend is running an 8 GB class 6 SanDisk memcard in his G1. Neither of us is running Apps2SD or anything weird.
glad to see i'm not the only one with this issue. was gonna buy a new 16 GB card but saw an article yesterday that sandisk is coming out with a 32 GB class 6 sdhc card in a month so i'll just wait for that one.
Same here
Same thing has happened three times on my Sandisk 16gb. I am running stock everything on nexus..nothing funky app wise.
After the first time it happened I replaced the sd card. It still happens. I have never been able to fix the card other than reformating. Chkdsk /f on win7 gets to 98% then throws an i/o error.
There is something majorly wrong. It seems that it happens in all android phones from time to time not just the nexus one. The consensus online seems to be that it is a mount/dismount issue that corrupts the card. I never mounted or dismounted the card at all with PC and it still happens so not sure what else it could be.
Do you think it is a phone hardware issue that would resolve with a new handset?
Has this ever happened to anybody using the standard 4GB card?
Where did you purchase your micro SD cards? There are a lot of fake/faulty cards being sold. I bought a fake one (unknowingly, obviously) and it kept getting corrupted until I tested it properly using h2testw.
I have the same problem on my nexus! I use an LG 16GB Card and CyanogenMod-5.0.5.3-N1! Any way of recovering the data without amon-ra?
Regards,
roman
Gr8gorilla said:
I think it have something to do with an improper dismount of the card.
Click to expand...
Click to collapse
+1 Make sure you dismount from computer first...otherwise this problem will pop up again...and may not be correctable next time. (There's a reason why the phone asks you to properly dismount from computer first)
no **** my n1 has the error message damaged sd card. restarted the phone a couple times and same message. what should i do? i see peoples solutions on this thread but idk where to start. i have a rooted n1 running cyan 5053 with apps2sd
I have had this problem a couple of times too, the latest being this morning
I have a stock N1 with a 16GB Sandisk card. The first time this happened, i went to use the camera and it said insert SD card, even though there was one there, I rebooted the phone and then got the Damaged SD card message.
This morning I was on the train, had been using the phone to read the news earlier with no problems, I got it out of my pocket and screen was black. and the phone completely unresponsive. Removed and replaced battery, booted up and got the Damaged sd card message again.
Both times I have been able to recover most of my files by putting the card in a PC, the first time I found that a couple of my photos were corrupted and unrecoverable, indicating that possibly it was the camera app that may have caused the issue the first time.
This time though, I found that some of my music tracks were corrupted along with one of my videos, and also a directory on the SD called LOST.DIR. Everything else was fine.
Not sure why only these files were affected, as I was not listening to music or watching any videos, so I dont see why the nexus one should have been accessing those parts of the card when it corrupted.
I could not delete the corrupted files, even on my PC, accessing them causes the PC to lock up. The only way to get card working again seems to be a format.
If only the format would work!
Regards,
Roman
Just happened to me as well. Genuine 8gb Sandisk, class 4.
After a reboot Nexus reports corrupted card. It really seems corrupted, I'm unable to read it in a PC or anything else:
[ 1042.673542] sd 11:0:0:0: [sdb] Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE
[ 1042.673551] sd 11:0:0:0: [sdb] Sense Key : Medium Error [current]
[ 1042.673561] sd 11:0:0:0: [sdb] Add. Sense: Unrecovered read error
[ 1042.673571] end_request: I/O error, dev sdb, sector 10248
I'm using CM 5.0.4.1 with UV kernel.
It's happened to me, even using the "safely remove hardware" function on the pc. i started just using the unmount on the phone which seemed less problematic.
Yep...add me to the list. Running stock N1 was playing music when it ocurred it started skipping through the tracks fast right before it stopped. It has affected/removed all my pics and left the music.
I'm with you all:
2 times on my Motorola Milestone, using a 16GB class 4 "unbranded" card
3 times on my Nexus, using that same 16GB class 4 card.
2 times on my Nexus, with a 16GB class 6 SanDisk card.
Most times, the data has been available by mounting the card into a PC or Mac directly, though my Mac has seen the card as "read-only" in these cases.
I seem to have this problem after mounting the card onto my work PC, though I don't often do that. I mostly use ADB to copy files. Maybe it is linked to leaving the debugging interface up all the time? I do that and I'm sure that most of you do as well...
Me too
I am using FRF91 MRCr21 and I am on a 800mv 070810 .35 rc4 kernel. Newest 5.00.08.04 radio.
Twice now after using quickboot my phone has reported my SD card damaged and it says I will have to reformat. It is a 8gb class 2 sandisk, real. One time I used quickboot to enter recovery mode and the other was only to reboot the phone. Has anyone else had this problem? What is the best fix? Both times I rebooted my phone was stable. I wasn't downloading or installing anything. Thanks!
My phone can't read the card. If I pull the card and put it directly in my computer it won't read either. Both OS can't read the file system and want me to reformat.
Neither happened due to not dismounting. Anyone correlate the problem with quickboot?
have had zero luck with adata 16GB classs 6 cards. i have gone through 2 of them however their 8 GB card has been awesome
Just had this with a Sandisk 16GB Class 2 card. Inserted into card reader, copied something, popped it back into the phone, corrupt card message. Even the computer says I have to format it.
This may just be a case of me being genuinely unlucky in my purchases but humour me anyway!
Like you lot I have an SGS and with all the recent mods regarding sound I like to use it as my mp3 player, so buying a micro sd card for additional storage was a must.
I had a spare 4gb class 2 card lying around so I've been using that for some months. Finally decided to upgrade to a more meaningful 16gb class 4 card.
Ordered one off Amazon through a seller. As soon as I put the card in the phone, it refused to recognise it but my PC, digital camera, old blackberry 9000 and n95 saw it just fine. So I formatted the card in the pc using the downloadable SD Card formatter as some googling suggested this might return the card to a working state. After that the phone saw a 16gb card, so I copied some music onto it, it worked for about 30 mins and then the card died totally. Upon reinserting it into the pc, windows only saw an 8mb card in RAW format and nothing I've done since has recovered the card. Card was dead.
Anyway I contacted the seller who posted me a nice shiny Kingson 16gb class 6 card right away.
New card arrived last night, appeared in the phone straight away as a 16gb card. Great start.
Plugged the phone in, started copying some music on it - the write speed was incredibly slow. I mean really slow, 100mb of mp3s was taking the best part of 3 minutes. Popped the card in the PC, same problem.
I find that I can actually write data to the card till its full (albeit slowly) but once you've written more than around 4gb of data, the files start to vanish.
I know it sounds incredibly stupid but anything written after around the 4gb mark just doesn't appear when I plug it into the phone or the PC. The card claims it is full, but only 4gb of data is visible, let alone accessible. I've done the usual formatting of the card and changing card readers etc etc but the result is the same and this is starting to grow boring.
So, question. Am I just incredibly unlucky in my purchases or is my SGS killing cards? Because I'm quite weary of buying yet another card now.
Funny enough my old 4gb card still works just fine like it has for years.
I know you'll have a FAT (file allocation table) that usually reserves a predetermined amount of space on the card for file locations. But your memory card should not be able to accept more than whats available and should be displayed correctly no matter what your using. IE pc or phone. Kingston are fairly reputable, but is your dealer reputable. There are a lot of counterfeits out there. I don't believe the phone itself is damaging these cards. Since your stating your old trusty card still works like a champ
Sent from my GT-I9000M using XDA App
Hey everyone,
I currently run CM7 off an SD but I was wondering if there are benefits to replacing the stock os on the emmc?
Are there any speed differences or technical pros to it?
Thanks for the input! This is a really fantastic forum!
sent from my nook color
joelszs said:
Hey everyone,
I currently run CM7 off an SD but I was wondering if there are benefits to replacing the stock os on the emmc?
Are there any speed differences or technical pros to it?
Thanks for the input! This is a really fantastic forum!
sent from my nook color
Click to expand...
Click to collapse
From my experience the booting time is almost half if using emmc version. (SD card version ran on a class 4 card). After booting the performance is almost same. You may get better boot time for sd card using a class 6 or class 10 card.
I dont have an answer for you as i picked mine up yesterday and decided to go the SD route at the start i am curious on this question myself.
JustusIV said:
I dont have an answer for you as i picked mine up yesterday and decided to go the SD route at the start i am curious on this question myself.
Click to expand...
Click to collapse
Well from my experience, running from the SD card is very smooth... so for ease of use i highly recommend it for a first go.
I have a follow up question- for some reason my macbook recognizes the second partition of my sd card but my pc desktop does not. I am referring to the partition generated for storage by the CM7 installation process that allows storage on the data card simultaneously.
Any ideas why this would be?
sent from my nook color
joelszs said:
Well from my experience, running from the SD card is very smooth... so for ease of use i highly recommend it for a first go.
I have a follow up question- for some reason my macbook recognizes the second partition of my sd card but my pc desktop does not. I am referring to the partition generated for storage by the CM7 installation process that allows storage on the data card simultaneously.
Any ideas why this would be?
sent from my nook color
Click to expand...
Click to collapse
I use Macs and Windows machines rarely (and I am guessing you run Windows on the desktop) but my guess is the ext4 partitioning that CM7 uses.
I seem to recall that working- at least somewhat- on Mac but not on Windows, but I am not positive.
i chose sd, because it's super easy to backup my sd card as an image by popping it into my laptop. I can then burn that image back to a sd card if i want to try a new android build without messing up my default android install. I can always boot into the original nook os if i want as it is unmodified.
i used a class 2 and it was pretty slow. moving up to a class 6 and 10 has really helped and i don't notice any slowness.
i have not run off internal memory though so i don't have a baseline to compare.
eMMC is faster than my class 2 uSD cards, and it's easier to swa stuff back and forth from a computer/phone/camera/whatever with a removable uSD.
Sent from my Froyo'd Epic using XDA App
Cool, I've been wondering about this myself and was about to make this same thread.
I was concerned because I get a ton of force closes running off the SD, and I wondered if that was a problem that would be solved by going to eemc. Or if somehow I've made a mistake setting up my card and that's the issue. I'm very knew to this whole scene, so I'm still a bit scared of rooting at the moment and would love to iron out the problems I'm having with the SD booting. Things run fast, and fairly smoothly but eventually something will force close, like Market, and then Google Frameworks and then pretty much everything will refuse to run after I tap their icon. Forcing me to restart. Also, some things, trying to download new skins for Beautiful Widgets is impossible. Only get force closes.
I can't figure out if it's anything in particular that causes it to spiral out of control. And what makes it more annoying is this is my girlfriend's new Nook, I'm trying to get it set up for her to work as smoothly as possible. If it was just mine, I wouldn't be as bothered by messing around and trying different configurations and whatnot. But I know she won't be as patient and tolerant of these issues and won't want to keep bugging me with every problem that pops up.
Would you say this is likely a localized problem on my end through some fault of my own? From this thread, it seems people are having pretty great experiences with the SD method. Which might be reassuring. I think I'll do a backup and start from scratch this evening.
@JRSly: What type of uSD card are you using. I was experiencing the same problems you had with booting, force close, refuse to run, thus a final restart. After swapping out four different types of uSD cards, SanDisk (class 2 and 4), A-DATA (class 6), Patriot (class10), I finally deteremined that the Nook is very picky about the type of card. All the cards work fine in my digital camera or PCs, but the A-DATA and Patriot are slow and often hang in the Nook. I am now using the three Sandisk cards with no problem. I recently updated to Nookie Froyo 6.8.5 and it runs great on the SanDisk cards. Just for the test if it will run faster on A-Data (class 6), wouldn't you know it starts to hang and FC just like before. I guess I'll use the A-Data card in my digicam. Try a Sandisk card and see what happens. I even try one of my old Sandisk 2GB card from my Blackberry which is unmarked but has a class 10 performance when measured.
I'm very new to this... and I keep seeing emmc.
What is this? Internal memory?
ax135 said:
@JRSly: What type of uSD card are you using. I was experiencing the same problems you had with booting, force close, refuse to run, thus a final restart. After swapping out four different types of uSD cards, SanDisk (class 2 and 4), A-DATA (class 6), Patriot (class10), I finally deteremined that the Nook is very picky about the type of card. All the cards work fine in my digital camera or PCs, but the A-DATA and Patriot are slow and often hang in the Nook. I am now using the three Sandisk cards with no problem. I recently updated to Nookie Froyo 6.8.5 and it runs great on the SanDisk cards. Just for the test if it will run faster on A-Data (class 6), wouldn't you know it starts to hang and FC just like before. I guess I'll use the A-Data card in my digicam. Try a Sandisk card and see what happens. I even try one of my old Sandisk 2GB card from my Blackberry which is unmarked but has a class 10 performance when measured.
Click to expand...
Click to collapse
I feared that this might be a possibility too. My first attempts were with a little 2Gb card I'd had lying around and it didn't work very well at all. I couldn't get past installing Gapps for all the force closes. The next day I went to Target to get a larger 8 Gb one so I could also play around with Honeycomb, it's a Class 6 Lexar card. I started over last night and tried a couple of attempts at wiping and burning the image and inevitably ran into the same problems. It looks like a crummy(at least in terms of what the Nook likes) card is a distinct possibility. I'll give Sandisk a shot.
BlizzofOZ said:
I'm very new to this... and I keep seeing emmc.
What is this? Internal memory?
Click to expand...
Click to collapse
Yup. (I didn't get it either.)
Since MMC is a sibling of SD cards, it's basically dedicated internal SD storage with a controller.
http://en.wikipedia.org/wiki/MultiMediaCard#eMMC
BlizzofOZ said:
I'm very new to this... and I keep seeing emmc.
What is this? Internal memory?
Click to expand...
Click to collapse
You got it in one.
sd card is self explanatory, of course, and emmc is the internal memory of the NC.
The only DISADVANTAGE to running on emmc is that you lose the stock B&N version of Android.
Other than that- it boots a bit faster, may run a bit faster and be less likely to have force closes and similar problems.
xdabr said:
Yup. (I didn't get it either.)
Since MMC is a sibling of SD cards, it's basically dedicated internal SD storage with a controller.
http://en.wikipedia.org/wiki/MultiMediaCard#eMMC
Click to expand...
Click to collapse
That's what I thought!
Thanks for the cofirmation
I am a newbie, still on original nook firmware think its 1.01
I am having trouble trying to install cm7 on a 16gb microsd card. I had a look in XDA and there are a few people having the same problems awhile ago, and then there are some who have managed to do it. I have trawled thru quite a few pages int he foru but can't seem to find a solution. Anyone here has any luck with installing cm7 to boot from a 16gb microsd? Any comments would be appreciated.
My problem seem to be, after i imaged the microsd and then copied the update night;y cm7. zip file across, the nook booth from the microsd but and setsups but then just hangs after superfiles(?) have been installed, whereas the guide saystehat it will ventually go to a blanks screen, which mine never does, then when i force shuitdown and reboot, it installls some android files but when it reboots after that it either hangs onthe ANDROID_ screen (keeps rebooting over and over again) or it goes to the cyogenm7 graphic screen and keeps rebooting to the startup screen.
Thanks
Try a different SD card, preferably 8G or less. Quite a few cards don't play nice. If you can get CM7 installed on a different card but still want to try it on your 16G card, you can image it over from your other working card. You'd then need to expand the 4th partition to reclaim the space then. It may work, or you may get random quirkiness using that card with force closes here and there.
I'd make sure to get a genuine SD card from a reputable dealer, not some dodgy one off Ebay. I have found Sandisk to be very reliable, and generally a cheaper Class 2 or 4 card will work better due to higher speeds with small random block r/w.
Good luck.
Heya guys,
long story short: I started getting some random SD card ejects after one of the updates. Sadly, I can't pinpoint the specific nightly.
The MicroSD card went through extensive tests,reformats and checks. Tried using it in both adaptive and portable storage modes but still getting the problem. The MicroSD card appears to be genuine, its 32 gigs and currently it works. It's formatted in ExFat I believe and it usually starts ejecting during the playback of songs.
I got an unsupported SD format once, but after a reboot it seems to be working again.
After some forum reading I saw that people say that their cards are usually dying and they just need to change it.
One thing I suspect that shorthened the life of my card was actually dual-booting with MultiRom. Im aware that cards have a specific write/read count, but I was a bit hopeful that I wouldnt need to change my card.
I'd like to ask if someone else has experienced the same issues and found a solution, or I really just need to get a new MicroSD card.
Thank you in Advance.