Mail Archives: djgpp/2000/09/12/18:30:36
On Tue, 12 Sep 2000 10:41:51 -0700, JohnT <jrt AT informatics DOT net> wrote:
>Damian Yerrick wrote:
>
>> On Sun, 10 Sep 2000 13:23:40 -0700, JohnT <jrt AT inXSformatics DOT net>
>> wrote:
>>
>> >Damian Yerrick wrote:
>> >
>> >> "Hidden" files and "system" files are considered by defraggers to be
>> >> fixed in position so as not to break some programs' copy protection.
>> >
>> >But when I've done a DIR /s/ah or DIR /s/as to look for hidden and
>> >system files, nothing unusual turned up as I recall. The possibility of
>> >some other bit being set in a file header or something in the FAT table
>> >having an odd value came to mind, but I don't have the know-how to
>> >check out those ideas.
>>
>> Just a shot in the dark, but what about read-only files? What about
>> any file recovery managers (undelete.exe, Recycle Bin, etc.) you're
>> using?
>
>The number of read-only files should not increase as one runs DOS
>sessions under Windows but I haven't checked on that. I also can't
>say whether Defrag treats read-only files as unmoveable. Also, not
>many applications mark files as read-only in any case.
Some CD drivers and versions of `copy' mark everything copied from a
CD as read-only.
>Files are
>deleted by changing a bit in the file header or FAT table, and Defrag
>doesn't mind those---it just gets rid of the deleted entries in whatever
>holds those headers. Files in the recycle bin of Win9x just stay there
>until you delete them or tell Win9x to, as far as I know.
These files may be immovable: files in the Recycle Bin, files in IE's
cache, files in .zip archives (if you're using a Zip Folders utility),
and anything else that uses virtual FAT.
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