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Old Nov 21, 2008, 6:18 PM   #1
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I mistakenly used a new card I had not formatted in my Canon G10 to take about 400 photos. I took the SD card ( Lexar Professional 4 GB) out of the camera and put it in the card slot on my laptop. The laptop asked if I wanted to format the card, I clicked no and put it back in the camera, which then gave me a memory card error.

The only thing I can thing of is that I have used the newer card which I had not formatted as I have two the same.

I tried Lexar's Image Resue 3 however it won't read the card so i can not try to recover the photos this way.

Does anyone have any suggestions please?

Thank you

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Old Nov 22, 2008, 9:39 AM   #2
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I'd suggest that you download and install this software for the operating system you're using (Windows, Mac, Linux). It's free. You'll see a download menu choice on the left side of the main page. Then, just click on the desired operating system to download it.


Use a card reader if possible, and select your memory card from the list of media it finds (hard drives, memory cards, etc.), and give it a place to save the photos to on your hard disk when you are asked Where to Save Recovered Files (it defaults to saving recovered files in subfolders under Photorec, where the software is installed on your hard drive, but you can change it to something else if desired). Note that this product does not retain the original file names (but, you may not care about that), since it ignores the file allocation table entirely.

Don't worry about changing any of the other options. Just leave everything else at the defaults (Partition type of Intel, file types to recover, etc.) and it will try to recover any files that haven't been overwritten yet (and don't try to do anything like take more photos or you may overwrite some of them).

Here's a page showing you how to use this software:


There are some other free programs around that do a pretty good job in most cases, too. Here's one example, and it also has a nice Graphical User Interface. I usually prefer photorec. But, if you're not comfortable with a text based interface, you may want to try this one first instead.


After you recover your images (and make sure you can see the larger images, not just the thumbnails), I'd make sure you format the card again before using it, using the camera's menu choice for format (not your PC).

I do that every time I reuse a card (format it again using the camera's menu choice for format). That way, the card always starts out with a fresh FAT (File Allocation Table), just the way the camera expects it, since the camera is performing the format.

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Old Nov 23, 2008, 3:43 AM   #3
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Thank You Jim,

I will give it a go.

Cheers Snowy
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Old Nov 26, 2008, 6:06 AM   #4
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Fantastic Advice!! I was able to retrieve all photos. Many many thanks. I have now formatted the card and tested it with no problems.

Thank you again
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