Re: Image recovery: Recovering fragmented image files from flash memory cards

Hans-Peter Diettrich <DrDiettrich1@[EMAIL PROTECTED]
> writes:
> cmyk wrote:
> 
> > 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.
> 
> FAT32 appends files until the end of the medium is reached. This is an
> optimization to prevent file segmentation. Deleted files are
> overwritten only after the medium is full.

I can think of few techniques _more_ likely to cause fragmentation!
(Assuming that's what you meant by "segmentation".) Every tem****ary 
file (just think of your browser cache etc.) will create a hole, for
example. Every hole is a place where the end of one file and the 
start of another, or even worse the middle of a file, will later be 
placed.

Phil
-- 
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