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|| SportsShooter.com: Member Message Board
Corrupted CF card
Clay Begrin, Photographer
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Petaluma | Ca | USA | Posted: 1:51 AM on 09.04.10 |
| ->> Hi all, looking to see if anyone has an answer for this issue as I've never seen it before. I was using a Sandisk extreme III 8 GB card on a Mark III. I shoot in raw. Once I plugged the CF card into the computer and opened it up, I saw about 12 folders and about 8 other red and blue icons. Not the normal folder. The folders all had names with weird symbols that my keyboard wont allow me to make. Like squares, numbers, arrows and many said they were like 2-3 GB in size. Also when I hoovered the mouse over the file some said they were last updated in like 2019 and 2051 (yes the future). well a few years ago I bought a program called Transpict recovery and I was able to recover the files from the card. But I'm very curious as to what may have caused this. There is one thing I did different tonight from every other shoot. I stored the used card in my pants pocket and for the first time ever I had a remote to my wifes car in that same pocket. Does anyone have any idea what can bring this corruption to the card? Could it be the car remote? or any other thoughts as I'd like to prevent this and it may also help someone else. Thanks in advance. |
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Robert Hanashiro, Photographer
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Los Angeles | CA | | Posted: 1:57 AM on 09.04.10 |
->> Have you ever done a full format on the card?
(Or just format in the camera?) |
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Clay Begrin, Photographer
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Petaluma | Ca | USA | Posted: 2:00 AM on 09.04.10 |
| ->> I've done in camera formats. In 5 years never seen this. Are you suggesting a format on the computer? |
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Robert Hanashiro, Photographer
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Los Angeles | CA | | Posted: 2:01 AM on 09.04.10 |
->> An "oldie" but still good info ...
From the Sports Shooter Newsletter Archives:
http://www.sportsshooter.com/news/1217
Maybe Mr. Deutsch can update here with thoughts on reformatting cards? |
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Clay Begrin, Photographer
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Petaluma | Ca | USA | Posted: 2:07 AM on 09.04.10 |
| ->> Thanks Bert, a nice article and I do have a program to wipe the cards. I noticed a comment about having data recovery tools if you over fill the card. That made me relaize that I had shot this card until it was full. I usually watch my count as to not get caught empty in the middle of a play, but tonight I filled the card. By the article it sort of infers that shooting the card full may cause problems and maybe that's my answer. |
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Jeff Mills, Photographer, Photo Editor
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Columbus | OH | USA | Posted: 2:41 AM on 09.04.10 |
->> I had a similar thing happen before on one of my D3's. Card worked fine on the camera, was reviewing images and so forth. Put it into a card reader and just a bunch of really weird signs and symbols and folders. Made no sense at all.
Tried it back in the camera and it worked fine in the camera so I put another card into my second CF slot and copied the images over.
Card reader read those just fine and after reformatting the card worked fine, and I tested it several times but to this day I just don't use it because I don't 100% trust it anymore.
No clue why it happened and its only happened once so I don't know if I can even say its a CF card issue. Maybe it was my camera or something, who's to say ?
CF cards are so cheap these days though that if you think its the possible weak link, I'd say just toss it and get a new one, for nothing else but piece of mind. |
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Darren Whitley, Photographer
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Northwest Missouri | MO | USA | Posted: 10:59 AM on 09.04.10 |
->> I've been experiencing a problem with file corruption too, but it's created by the Mac or by Photo Mechanic. It's not totally clear which is responsible.
1. I reboot the computer and a card in the reader populates the desktop.
2. Unaware that the card is not "ejected" by the OSX, I pull card1 from the reader.
3. Insert new card and go to PM to ingest.
4. PM starts ingest by numerous errors occur.
5. Look at card at the system level in Finder and attempt to copy files that are now corrupted.
In some instances I've been able to recover the files with Photo Rescue, but video files shot with the 5D Mark II were not recoverable using directory recovery based software approach.
Best thing to do is always make sure the original card is ejected first and then it doesn't happen except on very, very rare occassions. |
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Mark Loundy, Photo Editor
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San Jose | CA | USA | Posted: 12:45 PM on 09.04.10 |
->> If you do any reformatting in a computer, be sure that you format again in the device in which you're going to use the card. Every device has a slightly different format "flavor."
--Mark |
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Clay Begrin, Photographer
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Petaluma | Ca | USA | Posted: 10:37 PM on 09.04.10 |
| ->> Thanks Jeff and Mark. Jeff your's sounds pretty darn similar to my issue last night. Darrin I have no idea about your problem. After reading the above thread which is from 2004, I think my problem developed from shooting the card full. Something I rarely do. I've wiped the card with RescuePro and reformatted in computer and then in camera. Seems just fine. For those that may read this, the above link from 2004 states to reformat at FAT16. The sandisk website states for 4GB and larger format at FAT32. |
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Darren Whitley, Photographer
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Northwest Missouri | MO | USA | Posted: 12:34 PM on 09.05.10 |
->> I got an email from CameraBits this weekend.
According to CB, the issue is with OSX and how it caches directory information. Because the prior CF card's directory is cached, OSX corrupts the data when a second card is inserted in its place. This only occurs IF you fail to do the system-level software eject first.
Prior to about two years ago, I had not had this happen. I believe there may have been a firmware update with firewire that lead to this. |
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Kevin M. Cox, Photographer, Assistant
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Galveston & Houston | TX | US | Posted: 12:53 PM on 09.05.10 |
->> Darren, I've had success in your situation before. It only happens when I'm in a rush, I now count to 3 after the card disappears from the desktop before physically removing it from the reader. However if you pull a card too quickly and have NOT loaded a second one before you get the OS X error, just reinsert the card and eject it properly to clear the cache.
When I do get in a rush and insert the next card before getting the improper removal warning, I've used two different methods to avoid needing to run data recovery.
1) Eject the second (current) card properly then reboot the computer. Upon reboot I've had the card mount and show the expected images with no corruption.
2) Eject the second (current) card properly, reinsert the first card (that was pulled early), eject it properly, then back to the second card which now shows up un-corrupted. |
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