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- Path: comma.rhein.de!yaps!arno
- From: arno@yaps.rhein.de (Arno Eigenwillig)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Hidden files
- Message-ID: <Nvu8y*10g@yaps.rhein.de>
- Date: Fri, 23 Feb 1996 20:43:29 +0100
- References: <4fqerr$m2c@thorn.cc.usm.edu> <DMrsMy.GAD@csc.liv.ac.uk> <4gflta$ju4@cc.tut.fi>
- <Dn6CFI.Fxv@csc.liv.ac.uk>
- Organization: Yet Another Private Site in Meckenheim, Germany
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- In article <Dn6CFI.Fxv@csc.liv.ac.uk>, S.E. Morris writes:
-
- > If I remember correctly, AmigaDOS stores a map of
- > which sections of the disk are in use separately to the directory
- > listing.
-
- Yes, the so-called bitmap.
-
- > Therefore, it may be possible to reserve some blocks on
- > a disk without actually setting up a file for them.
-
- This is dangerous, though: Next time the File System validates the
- volume to recover from an incomplete write operation (by Murphy's Law
- always soonder than desireable), the bitmap is rebuilt by analyzing
- which blocks are used for files and dirs, your "reservation" will be
- deleted.
-
- -- __
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