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03/14/2006 04:39:06 PM · #1 |
I have a Canon 20D camera and a ScanDisk Ultra II 4.0 GB card. The camera reads it for a 1.8 GB. I don't remember whether or when it changed but I have formatted it in the camera.
Do you have any clue what's happening and then what to do about it? |
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03/14/2006 04:53:16 PM · #2 |
It sounds like the card somehow got formatted as FAT16 as opposed to FAT32. FAT16 has an upper limit of 2GB and might well report something like 1.8GB instead.
Has the card ever been formatted or used in a different camera for example?
Message edited by author 2006-03-14 16:53:28. |
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03/14/2006 05:24:51 PM · #3 |
Use a card reader to format it on a PC as FAT32. I'd try to use Canon's software if it has that ability. If that doesn't work, I'll trade you for my 2Gb (no sense in wasting it). ;-P
Message edited by author 2006-03-14 17:25:31. |
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03/14/2006 05:39:19 PM · #4 |
Thanks a lot guys.
rich, the card has not been used in a different camera.
I don't think I'll accept your offer, scalvert, not yet anyway.
I'll try to format it in my card reader first. If anything goes wrong there I might consider changing my mind. Until then, take good care.
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03/14/2006 05:54:08 PM · #5 |
I don't like to worry you, but your card may not be what you think it is.
A couple of months ago I bought a 2GB Kingston USB Memory Stick. Windows reported that it was 2GB but when I formatted it Windows said it was only 64MB. After several frustrating hours I took it apart and found that the memory chip inside was only 64MB. Further investigations, a replacement stick, and discussions with my supplier revealed that the sticks he had on his shelf were fake. Apparently, they were imported (in good faith) by one of the big UK importers from China.
It's relatively easy to make a file system report that it is bigger than it actually is.
I have seen reports that this scam is also being played with other makes of card.
On the other hand I'm not sure what the largest file system is that the 20D can access.
Edited for spelling
Message edited by author 2006-03-14 18:06:19. |
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03/14/2006 06:19:50 PM · #6 |
The FAT16 format scenario is the most likely culprit; FAT16 can address 2GB, which may very well be reported as 1.8 after the overhead for formatting.
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03/14/2006 06:22:30 PM · #7 |
Originally posted by kirbic:
The FAT16 format scenario is the most likely culprit; FAT16 can address 2GB, which may very well be reported as 1.8 after the overhead for formatting. |
Shouldn't just doing an in camera format address that, rather than bothering applying a windows format in a card reader ? Guess it depends if the cameras do high or low level formats to undo the previous mis-configuration. |
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03/14/2006 07:08:31 PM · #8 |
Originally posted by Gordon:
Originally posted by kirbic:
The FAT16 format scenario is the most likely culprit; FAT16 can address 2GB, which may very well be reported as 1.8 after the overhead for formatting. |
Shouldn't just doing an in camera format address that, rather than bothering applying a windows format in a card reader ? Guess it depends if the cameras do high or low level formats to undo the previous mis-configuration. |
Don't know for sure, I don't have a card bigger than 2GB to test it out! From the speed of the in-camera format, I'm pretty sure it is a quick format, not a full format. I believe that if the card has been formatted FAT16, the camera's not smart enough to figure out that there's another half a card there. It thinks the partition is 2GB, period.
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03/16/2006 03:45:04 AM · #9 |
I thought everyone was aware of this. Just in case they are not here is the info i took from Hexus.net (one of the most respected forums on the net).
This came from Hexus.net a very reliable and extremely respected Forum.
Lately there has been a huge increase in the number of counterfeit flash drives on eBay. Sellers claim to be selling large drives (e.g 8GB) from name brand companies, like Sony, but they are actually 64MB drives that have been re-labeled. These drives usually break within a few weeks of being purchase. Please digg this to stop the scammers!
www.seoulcc.org/consumer-alert-sony/Report_on_Sony_Thumb_Drives.pdf
This can alledgly be done with any Memory Stick or Card. |
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03/31/2006 06:42:13 PM · #10 |
| Eventually I found out I had to move a very small tab/pin to be able to format the card as FAT 32. And then everything was ok. |
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