Xref: utzoo comp.sys.amiga:58635 comp.sys.amiga.tech:12285
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!cbmvax!dale
From: dale@cbmvax.commodore.com (Dale Luck - Amiga)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: hd users question
Message-ID: <11926@cbmvax.commodore.com>
Date: 29 May 90 21:59:29 GMT
Reply-To: dale@cbmvax.UUCP (Dale Luck - Amiga)
Organization: Commodore Technology, West Chester, PA
Lines: 27

This last week at Xhibition '90 while hooking an existing
working and partitioned disk drive up to an Amiga I accidentally
(second time in last 6 months) wiped out the partition information
on the disk drive by updating the rigid disk block info with the
default partition info. I spent about 3 days, off an on trying
to recover the partition information by changing my partition
sizes which I roughly still new but it has 1400 cylinders and there
were three partition so it took awhile.

I finally got a copy of disksalv and set it to work on an estimate
for a parition. Told it to scan for blocks around what I thought was
the proper partition and eventually noticed the bright red "root block"
directory go by. Since the little window was up that was telling me which
block it was reading I could zero in on the root block with a better
accurate guess. Update the partition info since on the fast file system
the root block is right in the middle of the partition.

My question:
   Has anyone else ever accidentally blown there parition info away and
were lost as to how to recover it? The data on the disk is all there
it just does not know where the start and end of the partition is.
By the way, the first time I did it either I found a piece of paper with
the cyl info written on it or I decided to just start over and hope
that I did not loose any non backed up info.

Please send email since I am kind of taking a poll.
Dale Luck