I've been watching, reading, and doing my own research on the subject.
Here is my conclusion. Curious to see if you run into the same:
1) There were a bad batch of 16gb class 2 micro sdhc cards that were replaced by T-Mobile.
2) The micro sdhc cards were CLASS 2.
3) On the original stock ROM had \storage card\application data\htc data stored on the card. As of the new ROM, that data is officially stored on the phone memory. I know this because I sync my sdhc card to my home PC using ViceVersa and haven't had a single file in that directory change since the ROM upgrade.
4) I've never had any freeze issues, but that's because I have a 16gb CLASS 6 sdhc card that moved everything to and don't have the speed/reliability issues that others may have experienced because of #1 and #2.
I have no idea what the data is that was being pushed to the card in the old ROM, but I believe that T-Mobile recognized issues with pushing data to a card where it may not get mounted quick enough on boot, has speed issues (class 2), as well as having a possible bad shipment of cards.
I also believe that depending on the above scenario, T-Mobile may have been blindly replacing "bad" cards as a fix when in reality, it was more of an issue with the speed of the card and/or possibly the card not getting mounted quick enough on system boot causing stability issues.
I would challenge anybody with the original ROM to pull their SD cards for 24-48 hours and I bet your freeze issues go away, unless you actually do have a bad SD card.
On that same note, that would explain why a custom ROM would fix the problem, because chef's weren't configuring their ROM's to cache any data to an SD card.
Bottom line, it wouldn't matter if you installed anything to the card or not. Because the original ROM was configured to write to the SD card if it found one, you would "potentially" have freeze issues with a bad or slow card, no matter what.
Sorry if this is redundant, but I've seen everybody making conclusions on bits and pieces of the information, but not with the entire picture I painted. Maybe I'm right, maybe I'm wrong. You decide.
=)
Update:
After finally deleting the \storage card\application data folder, the files did come back. Does anybody know what these are? I'd like to get those to point back to the phone memory personally. I don't like anything on the external card, other then what I say should be there.
Related
Hi everyone.
Hope someone can shed some light on this, I have a Kingston 512MB SD card for my XDA2, contained on the card are maps for TomTom Nav2, MP3's and a couple of movies.
I have not done a HR in a few weeks and only a few SR's, yesterday I wanted to navigate and use TT and all the data on the card had disappeared. Has anyone experienced this b 4? Any help would be mush appreciated.
Matt
Dissapearing data from SD card.
Hi,
I had this before on a 256MB card with maps on it. I reinstalled the maps and then hardware locked the card only moving opening this up on the occasion I need to move stuff to it. Mine wiped right when I needed the navigation system so I always keep it locked down now. I know it's not an answer but it saves a long and slow re-install.
Lyndon.
I'm also getting my 256MB SD Card(PNY) erased/corrupted, sometimes I have multiple entries for my storage card! This always results in losing everything on the SD. I've tried all the romkitchen versions of 2003 and get the same results. Plus I've noticed running the SD-Backup appears slower, taking 1h 10mins for 12MB. Someone must have a clue whats causing this.
XDA I (Wallaby)
32MB RAM
OS ROM 4.01.16
Radio 4.21.00
SD data disappearing
I have experienced the same problem on XDaII and completely lost the data.This despite a back up I lost many holiday pics and movies.
Q I use "Pocket Explorer" to move jpg & video files onto the SD, they appear to be there but then they dissappear. Any thoughts or suggestions would be appreciated.
never had that happen on my 2 sd cards both sandisk and 1 128 and the other 256
I have the T-Mobile (USA) MDA, an HTC Wizard. In it I have a Sandisk 2GB miniSD card.
For the second time now, suddenly and inexplicably, most of the data on the card is missing. There was no operation I executed that could have deleted the data, it was suddenly gone, for no apparent reason. This happened once before?
Has this happened to others? Is it a bug in the MDA, that it sometimes deletes data from the storage card, for no reason? Are those miniSD cards inherently unstable, sometimes suddenly losing their data? Or might I have a defective card?
If the card is defective, I think I could call Sandisk, and get a new card under warranty. (If the MDA is defective, nothing I can do about it, no longer under warranty.) So, I'd like to have some idea--bad card or bad MDA?
Also, I have a USB card reader that can read miniSD cards, and have used that before to transfer data to the card from the computer. That seems to no longer work. I wonder if that is also an indication of a bad card. (Although it could also be the a failure of the card reader, or of my Windows XP installation.) Now I can only transfer data back to the card via ActiveSync.
Is there a utility, that either from the computer, or directly on the PPC, can check the disk surface of an SD card for errors, and fix them (similar to chkdsk)?
Any insight into this problem would be appreciated. Thank you.
I assume you checked the SD on a computer to verify the files were actually gone, and not just "hidden" from the MDA?
Do you have another chip you can test run? Maybe in a camera or something?
Myrddin Wyllt said:
I assume you checked the SD on a computer to verify the files were actually gone, and not just "hidden" from the MDA?
Do you have another chip you can test run? Maybe in a camera or something?
Click to expand...
Click to collapse
"Hidden from the MDA" in what way? (Even when files are deleted they are not "actually gone", and can sometimes be recovered.) Do you mean turned into "hidden files"? No, that's not the case, as I have Resco Explorer set to view all hidden and system files, not to hide any files, and it didn't see the files, nor did any app. Nor did ActiveSync, when connected to the computer, Explore.
As I mentioned, my USB miniSD card reader doesn't seem to be functioning either, so I cannot look at the card directly on the computer.
I'm not sure what you mean by "test run another chip"? I do have another miniSD card, a 1GB card I had purchased first. I don't see what point would be served by "testing" that. It is not that this card is constantly deleting files. You could test this card, and it would seem to be OK. But it has happened twice already, that most (not all) of the data on the card was suddenly missing. So, there is definitely a problem, either on the card, the MDA hardware, or an app or the OS (WM5) on the MDA. But you cannot test it out by putting in another card, as one wouldn't necessarily see the same problem right away, as one also might not with this (problem) card.
Something strange happened since the original post though. Fortunately, I had a lot of the data from the storage card backed up to my PC. Via Activesync, I copied some of that back to the MDA Storage Card. After doing so, suddenly it looks like all the missing data has been restored, including a lot of data that I had not yet copied back.
What could have happened? Still wondering whether to call Sandisk and report a defective card.
undelete tools for normal harddisks work just fine on sd cards in sdcard readers
Rudegar said:
undelete tools for normal harddisks work just fine on sd cards in sdcard readers
Click to expand...
Click to collapse
That isn't the question. I didn't ask how to undelete the files. And, as I said, my card reader isn't working either.
Also, as I said, I had the data backed up to HD, so really don't need to undelete.
So----what's the problem then? Obviously something's wrong if a memory card suddenly and inexplicably loses its data, now for the second time.
So I was asking--what could be causing this to happen? Has it happened to others? Is it likely a defective card? Or defective PPC?
me said:
Is it likely a defective card? Or defective PPC?
Click to expand...
Click to collapse
Yes, but without an alternate means of testing either, it's a waste of time to speculate. Hence my admonishment to go find a card reader. You can run a complete format and look for bad sectors on the suspect SD chip that way...something you cannot do from the PPC to the best of my knowledge. Chances are, the boot sector (where the location of files in memory is written) on your SD chip is failing (if the chip is old, that is VERY likely, as flash memory has a limited number of rewrites that usually hits around the 2 year mark for heavy users, and if you're moving music on-and-off a lot, that's you....).
So, no, there's no way to be SURE, without getting your hands on a reader (and c'mon, they're like, $10).
Hi All,
Does anyone else here suffer from continual SD card corruption? It appears that the early superblocks of my card are continually being corrupted by my Hero no matter how I format or partition the card.
Naturally I would assume that this was a card issue but running some load tests on a laptop shows the card to be functioning properly and reliably. Next thought would be that it's the phone but using an alternative card in the phone seems to be trouble free also. Any ideas?
My alternative card is a 2GB vs the troublesome 8GB card that I would prefer to have for music, etc.
I see lots of web results for people complaining about corrupt SD cards but no solutions or responses.
I had this problem too. Fixed by buying a decent class 6 microSD card. No problems since.
Had a 16GB memory card in my HD2 for about 6 months. Yesterday it failed for no apparent reason. Anyone else had this happen? Or any idea as to how I could get the data back? Tried it on my PC in a card reader, but it just says 'Please insert disk...'
Not that big a deal, but its a hassle as most of my apps and icons, and all my TomTom maps were stored on the card
quite a few have had memory cards fail whilst using them in the hd2
same here
also had a new (ebay/unbranded) 8Gb micro SD card fail on me last week after only 6 days of use. Completely fried - PC refused to recognise it existed at all. Lucikly had been syncing entire contents daily to a backup folder on my home NAS using GoodSync so returned to ebayer for replacement and then re-synced with no data loss.
I had a similar experience, not with my HD2 but with my previous HD. The card appears in the directory only for a few seconds and then disappears, on every fresh reboot of the phone (not sure if that's your case too). So what I did was to have the phone boot-up while connected to the PC, and copy the data from it as quick as possible before it 'disappears'. Once I did that and had all my info safe, I formatted the card and it worked fine afterwards. Never knew what exactly had caused the failure though, but fortunately I was able to recover the data as described.
Had a failure with a 16GB mSD Sandisk in my HTC Touch HD Blackstone 2 months ago after 2,5 years of heavy use. Parts of my data were corrupted and phone froze.
mSD was still recognized by PC but unable to write or copy any data any more. Also no luck with recovery apps for PC.
I dunno if it was the Blackstone that fu..** the card or vice versa, the ROM of my Blackstone was fu..** too. I flashed G10s Ultimate Dusk, have a new sd card and now works fine again.
Sh.. happens once in a while
Just killed second SD card in my S7 Edge and by 90% its caused by GPM while downloading my archive to phone. After fresh install I cached maps to sygic navigation, one more other app and saved around 4GB of data without any problems. Then I let GPM cache my playlist worth cca 5GB of music. After hour or so checked phone and found card disconnected. And it was dead, didnt work in phone nor pc anymore. So I exchanged it for another one (RMA) and did exactly the same with another. Unfortunatelly same situation, other apps downloaded data correctly, GPM killed card after hour or so of downloading.
Both cards were Kingston 64GB U3 fast cards.
Not sure if I want to try third time in row...
I've had bad experiences with kingston microsd cards - randomly failing or getting a lot of errors. I initially thought it was bad luck.. now I use Samsung and Sandisk ones and I haven't had any problems.
There must be a quality issue with the kingston ones. Have you tried a different brand? I'll try an old samsung card and see if it messes up with Google Music
I typically stick to SanDisk and have about 10GB of music from GPM on my SD card at any given time. Never had any issues through various ROM installs and wipes.
Will take card to RMA (again) and get different brand, probably SanDisk. Hope it will be better luck, because not sure how many cards I can succesfully RMA befor they get some suspicion in shop
hboos said:
I've had bad experiences with kingston microsd cards - randomly failing or getting a lot of errors. I initially thought it was bad luck.. now I use Samsung and Sandisk ones and I haven't had any problems.
There must be a quality issue with the kingston ones. Have you tried a different brand? I'll try an old samsung card and see if it messes up with Google Music
Click to expand...
Click to collapse
same with me, i had really bad experiences with kingston microsd cards, im using sandisk for about 2.5 years now without any issues
Are you enabling encryption on the SD card?
I had that setup on my Lexar 1000x to begin with and after a few days ended up with a corrupted filesystem in my GS7E.
I reformatted the card using Windblows, reinstalled it and reformatted it with the GS7E, but with encryption disabled, and performance has been more consistent (read and write).
I'm just wondering if SD card encryption could be mis-behaved.
C0derbear said:
Are you enabling encryption on the SD card?
I had that setup on my Lexar 1000x to begin with and after a few days ended up with a corrupted filesystem in my GS7E.
I reformatted the card using Windblows, reinstalled it and reformatted it with the GS7E, but with encryption disabled, and performance has been more consistent (read and write).
I'm just wondering if SD card encryption could be mis-behaved.
Click to expand...
Click to collapse
No,used plain filesystem and card,also different result is that card is dead now. Cant format it in phone (it cant see it) nor in computer...
Wlk said:
No,used plain filesystem and card,also different result is that card is dead now. Cant format it in phone (it cant see it) nor in computer...
Click to expand...
Click to collapse
"blecch"
C0derbear said:
Are you enabling encryption on the SD card?
I had that setup on my Lexar 1000x to begin with and after a few days ended up with a corrupted filesystem in my GS7E.
I reformatted the card using Windblows, reinstalled it and reformatted it with the GS7E, but with encryption disabled, and performance has been more consistent (read and write).
I'm just wondering if SD card encryption could be mis-behaved.
Click to expand...
Click to collapse
ooh that's worrying.. i decided to try out lexar and got the 128gb 1000x card.. should be coming tomorrow. yikes.