First off, I suggest using WinHex to generate an image of the device
in question. WinHex also has some FAT32 diagnostic features that can
help you.
Basically, you have to (either programatically or manually) trace the
cluster chain of your file until you get to a point where the next
cluster in the chain is either invalid or not removed from the list of
free clusters, indicating that the FAT management software stopped
working. All the data up to that point should be fine. Then you can
manually update the FAT entry for the file, or more simply, just
extract all the data in the cluster chain into a file.
- Marcel

On Sun, May 9, 2010 at 1:12 PM, Electron <electron2k4@infinito.it> wrote:
>
> Hi,
> I have a portable MPEG2 video recorder which records on FAT32 formatted CF32 cards.
> While I was out with my bike I recorded everything, as usual. Unfortunately a short
> power interruption has caused one file not to be closed, and now it appears as being
> 0 bytes long. However, a lot of data was recorded there, and is incidentally the
> data I was most interested in.
>
> I have tried with File Scavenger, with Easy Recovery, I have Googled for other utils
> but found nothing that seems that may help.
>
> Is there any utility or way to get the data back from that truncated file? I was
> thinking to open the file and set its length to an arbitrary high value.. but would
> that work?
>
> Of course I am currently avoiding any operation (such as CHKDSK /f ) that would modify
> the original device.
>
> Thanks.
>
> Mario
>
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