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Old Dec 5th, 2010, 11:25 PM   #1
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SD Card corrupted, then randomly works

So, today I decided to organize and format my SD Card. It is a 4GB HP SD Card. I had ALL my photos on it that I ever did this past year, and a few important AutoCAD drawings I REALLY need for school. It had 2.3GB worth of AutoCAD drawings and pictures. I copied the SD Cards contents to my Desktop, opened Disk Utility, and formated the SD Card to FAT32. Then, after it was complete, I copied it's contents back to the SD Card, and erased the files from the Desktop. Then, I ejected the disk, made sure the icon was gone, and just when I take it out, it gives me a message that says: This disk is in use and could not be ejected, AND half a milisecond later (literally) I got a red Stop sign with an exclamation point saying something that I incorrectly ejected the disk. THEN... WOW HOLYCRAP IT WORKS! well, that was really weird, because it couldn't read it and said it needed formating in OS X and 7, then a few seconds ago, i opened disk utility and while I was typing this message all of a sudden I can access it O.O wow, Apple has been a lifesaver
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Old Dec 5th, 2010, 11:28 PM   #2
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o.o like all my files are there, it's like  have magicians that watch your every move and can do anything. Wow, like for 10 minutes I thought I lost everything. Making a backup RIGHT NOW.
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Old Dec 6th, 2010, 03:32 AM   #3
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After that I would be getting a new SD card, don't take chances again.
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Old Dec 6th, 2010, 04:27 AM   #4
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storage

[QUOTE I had ALL my photos on it that I ever did this past year, and a few important AutoCAD drawings I REALLY need for school. It had 2.3GB worth of AutoCAD drawings and pictures./QUOTE]

As I understand it, flash drives are the least reliable of all current storage, and are actually quite expensive, gig for gig. An SD card should certainly not hold the only copy you have of anything important. Make a backup now, and try and use more reliable media such as hard disc. And keep making backups.

Based on several decades of experience with storage media failure, I expect all storage media to fail eventually, and I make 2 separate backups of everything.

Put the dollar cost in context: not that long ago, one gig of storage cost $ 1,000. It's orders of magnitude less than that now, isn't it? Surely you can afford the price of storage!
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Old Dec 6th, 2010, 07:12 AM   #5
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I never format my flash cards with the computer anymore,
I always format the card with my camera only now.

Mainly because I lost the use of a flash card by formatting it with the computer once,
I don't know why but my camera just refused to understand the format.

I think it's because the computer doesn't format a new directory like the camera does.
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Old Dec 6th, 2010, 09:25 AM   #6
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Format in the Camera

Quote:
Originally Posted by dolawren View Post
I never format my flash cards with the computer anymore,
I always format the card with my camera only now.

Mainly because I lost the use of a flash card by formatting it with the computer once,
I don't know why but my camera just refused to understand the format.

I think it's because the computer doesn't format a new directory like the camera does.
Plus One for formatting with the camera.
The camera seems much happier when it gets to format the SD Card itself.

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Old Dec 6th, 2010, 09:52 AM   #7
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personally, i would never trust an sd card to be used as a storage device, the memory on it just seems too volatile. for me, once it's in a camera i don't even take it out until i'm ready to download the images, and once the images are off and safe i do a format from the camera. never had a problem although i should add that i generally buy the best sd i can. same goes with usb sticks; fine for transferring info but i would never trust one for backup... my 2:buy yourself an external HD pdq!
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Old Dec 6th, 2010, 10:58 AM   #8
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Quote:
Originally Posted by mkolesa View Post
personally, i would never trust an sd card to be used as a storage device, the memory on it just seems too volatile. for me, once it's in a camera i don't even take it out until i'm ready to download the images, and once the images are off and safe i do a format from the camera. never had a problem although i should add that i generally buy the best sd i can. same goes with usb sticks; fine for transferring info but i would never trust one for backup... my 2:buy yourself an external HD pdq!
As above, except I lock the card when transferring images, back-up the downloaded images, test the backed-up images. Only then do I replace the card in the camera and reformat it.

In this case it sounds like the card was being used in the camera and for moving and saving files. Extremely dangerous. One card for the camera. Another for your projects. Back-up, back-up...

CAD projects should never, ever exist only on a Flash Medium, not even for just a flash in time.
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Old Dec 6th, 2010, 08:29 PM   #9
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Quote:
Originally Posted by K2ACP View Post
So, today I decided to organize and format my SD Card.
My Mantra: If it ain't broke, don't fix it.

And, as others have emphasized, flash cards (and flash USB memory) are temporary storage!
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