> FAT32 allocates files strictly sequentially, until the medium is full.
> You can assume that no overlapped writes occured, to multiple files at
the same time. In this case a recovery will work quite
> well. When files have been erased, and the clusters have been reused
later, you'll have much more problems.
>
> DoDi
Hi Hans,
Under the FAT system, if you delete a file, as one might do with a poor
shot, then it's space is simply marked as being available
for re-use. If that file happens not to have been the last one written,
then there is a good chance that either the next file
written to the media, or the one after that, will be fragmented. For
example (in simple terms, ignoring cluster sizes), if the
deleted file occupied 1000K and the next two files written each occupied
800K, the second of those files would be fragmented into
200K and 600K segments. Similarly, if the next file written was 1200K, it
would be split into 1000K and 200K segments. Given the
variability of jpeg file sizes and the tendency of many users to delete
files when they review them, fragmentation over 3 or more
clusters is quite possible.
Cheers
--
cmyk
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