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From: ralph@cm.cf.ac.uk
Newsgroups: comp.sys.mac.system
Subject: Re: Bug ?
Summary: Norton done it!
Message-ID: <1991Jun14.083941.20953@cm.cf.ac.uk>
Date: 14 Jun 91 08:39:41 GMT
References: <1991Jun12.080836.25346@cm.cf.ac.uk> <10988@castle.ed.ac.uk>
Sender: news@cm.cf.ac.uk (USENET News System)
Organization: Univ. of Wales College of Cardiff
Lines: 25

In article <1991Jun12.080836.25346@cm.cf.ac.uk> ralph@cm.cf.ac.uk writes:
>It seems highly likely there is a bug in system 7, the system 7 finder, or
>system 7 disk first aid. Here's what happened.
>
>I backed up my hard disk onto tape using fastback II v2.5 (it works if VM
>is off). I then erased my disk from the finder. I then restored my disk. I
>then ran disk first aid to check, and low and behold, DFA said that my disk
>was damaged, and that it was unable to repair the disk. (In detail, it
>complained about an invalid sibling link).
>
>I did NOTHING else in between the restore and running DFA, so it seems
>highly likely that one or other of the system components above is
>responsible for screwing up my directory.

It turns out that I had left NORTON FileSaver going, and after backing up and
restoring, the filesaver files were on a new place on the disk. Filesaver "to
be efficient" somehow remembers where its files are on the disk, and hence it
wrote in the wrong place. This screwed up the directory.
After slinging out the filesaver files, everything went ok again.

So, an apology is in order to Apple. Maybe system 7 is rock solid after all!
And a raspberry to Norton for making damaging assumptions!

Ralph