Roger K said:
On completion, Defrag reports that I have 1,083 fragments in a 1.5GB file,
\FOUND.001\FILE0000.CHK.
I presume it's a system file and cannot be deleted?
Actually, it's not. What has happened is that there was a problem at some point which caused Windows to scan the disk for
corruption. It found what it believes to be a 1.5GB chunk of space that was allocated but not assigned. That means, that it is set
aside (is not free space), but no filename is associated it with. These "lost clusters" are then assigned a filename (the system
has no way of knowing what the filename should be so it assigns a generic filename) and put in a generically named folder to prevent
data loss. The system has done all it can at this point, and leaves the lost files it finds for you to check to see if you need
them or not. Are you missing any large files? Perhaps some big file you had got damaged was lost. If not, then what that may be
is a pagefile or something (how much RAM do you have?)
Defrag reports that the file is heavily fragmented because the file is so large and you probably didn't have enough space for the
whole thing when it was created. It's not uncommon for such large files to be so fragmented. Your main concern should be with how
big the file is, it's taking up a lot of space.
The best thing to do is to get a copy of a hex editor (a simple, basic one is find for your purpose.) Open the file in the hex
editor and take a look around. Do you see anything familiar? Do you see anything that you know is from a file you want or need?
If you can't find anything important or irreplaceable, then just delete the folder (and the file in it). If you do find that it is
a file of yours, then you can rename it and move it, but be aware that it will not necessarily be perfect, it may be corrupt. In
fact, best case scenario, the file will be fine but have some extra junk at the end. Depending on what kind of file it was, it may
or may not work; a lot of programs will work, but some may complain if you try to open it.
HTH