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- Path: sparky!uunet!mcsun!uknet!bradford.ac.uk!T.D.G.Sandford
- From: T.D.G.Sandford@bradford.ac.uk (TDG SANDFORD)
- Newsgroups: comp.sys.ibm.pc.misc
- Subject: Re: Unable to undelete
- Message-ID: <1992Aug14.173323.23012@bradford.ac.uk>
- Date: 14 Aug 92 17:33:23 GMT
- References: <1992Aug13.171251.19825@menudo.uh.edu> <jf=ylsk@rpi.edu>
- Organization: University of Bradford, UK
- Lines: 20
- Originator: 90908106@muser
- Nntp-Posting-Host: muser
-
- In article <jf=ylsk@rpi.edu> ncc1701@acm.rpi.edu writes:
- >Sounds like some of the files were cross-linked. As long as
- >they were all deleted, they had equal chance of being recovered
- >in an "orderly" fashion. However, once one file that was
- >cross-linked with another was recovered, the second file
- >would see part of itself as being allocated, and would
- >therefore no longer have a good chance at recovery.
- >
- Not necessarily - more likely the files were fragmented, and undeleting one
- of the earlier ones incorrectly included the start cluster of one of the later
- files (since, without delete tracking, there is no way of telling which
- clusters apart from the first one to use - so undelete programs generally
- allocate the next available cluster until the file length is satisfied). It
- can be better to undelete starting from the LAST file in the directory and
- working up, but the best solutions are i) don't delete the wrong files in
- the first place :-) ii) keep backups iii) use delete tracking iv) unfragment
- your hard disk regularly
- --
- Thomas Sandford | t.d.g.sandford@bradford.ac.uk
-