Xref: utzoo comp.sys.amiga:58770 comp.sys.amiga.tech:12338
Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!van-bc!ubc-cs!cheddar.ucs.ubc.ca!panon
From: panon@cheddar.ucs.ubc.ca (Paul-Andre Panon)
Newsgroups: comp.sys.amiga,comp.sys.amiga.tech
Subject: Re: hd users question
Keywords: hard drives
Message-ID: <8060@ubc-cs.UUCP>
Date: 31 May 90 17:37:00 GMT
References: <11926@cbmvax.commodore.com> <111@fishpond.UUCP>
Sender: news@cs.ubc.ca
Reply-To: panon@cheddar.ucs.ubc.ca (Paul-Andre Panon)
Distribution: na
Organization: UBC Computing Centre, Vancouver, B.C., Canada
Lines: 40

In article <111@fishpond.UUCP> fnf@fishpond.UUCP (Fred Fish) writes:
>In article <11926@cbmvax.commodore.com> dale@cbmvax.UUCP (Dale Luck - Amiga) writes:
>>
>>   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.
>
>[Fread writes about recovery techniques]
>Someone should write a program to scan the disk counting root blocks
>(to get the number of partitions), set up and solve the linear equations,
>and spit out the partition information.
>
>-Fred
>-- 
># Fred Fish, 1835 E. Belmont Drive, Tempe, AZ 85284,  USA
># 1-602-491-0048               asuvax!mcdphx!fishpond!fnf
I once had to recover a hard drive where the boot partition (and of course
the hard drive mountlist) got trashed. Once. Fortunately, I had just
installed it three days earlier so after a few hours worth of trying,
I finally stumbled across the right combination and re-installed the boot
partition & mountlist.

Solution: keep a copy of your HD mountlist (expanded to include the boot
partition) on a write-protected floppy somewhere safe. The time you'll save
is well worth the $2.00 for the floppy. This way you can mount the working
partitions and back them up if the problem is so bad that you have to low-level
format the drive, and can reinstall AmigaDOS trivially otherwise. I think this
procedure should be recommended in the manuals for all Amigas which come with
hard drives (A2000HD, A2500, A3000). What I want is a program which will
rebuild RES0: given that expanded mountlist. It is probably trivial to do.
I may even do it someday if I can find out what RES0: is supposed
to contain and its correct format.

Fred's program suggestion is very nice but people shouldn't start depending
on it and they probably would if the program was available.
An ounce of prevention is worth a pound of cure.
--
    Paul-Andre_Panon@staff.ucs.ubc.ca        or    USERPAP1@UBCMTSG 
or  Paul-Andre_Panon@undergrad.cs.ubc.ca     or    USERPAP1@mtsg.ubc.ca
Looking for a .signature? "We've already got one. It is ver-ry ni-sce!"