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From: fnf@mcdsun.UUCP (Fred Fish)
Newsgroups: comp.sys.amiga
Subject: Re: Mini-review of CLtd 20M disk
Message-ID: <223@mcdsun.UUCP>
Date: Sat, 3-Jan-87 13:28:36 EST
Article-I.D.: mcdsun.223
Posted: Sat Jan  3 13:28:36 1987
Date-Received: Sun, 4-Jan-87 03:44:03 EST
References: <220@mcdsun.UUCP> <899@ulowell.UUCP>
Reply-To: fnf@mcdsun.UUCP (Fred Fish)
Organization: Motorola Microcomputer Division
Lines: 53
Keywords: disks expansion

In article <899@ulowell.UUCP> page@ulowell.UUCP (Bob Page) writes:
>Fred said that he paid $900 for his.  I paid $750 (that's with the pass-
>thru connector for the aMEGA 1MB box).  However, he also said he had no
>connection with ASDG ... I assume you meant CLtd?  Did you also make a
>typo about the cost?

Ooops.  The ASDG part was copied from my preceding mini-review of
the ASDG product and I forgot to change the name.  The $900 was not
a typo.  Got mine from HT Electronics in Sunnyvale.  Where did you get yours
for $750?

By the way, I just spent the last 3 days recovering from a scrambled disk.
This could have happened on ANY hard disk, so it's not really a CLtd
comment.  Was running a program that had several files open on the
hard disk and was actively writing to it when it GURU'd.  Bye bye disk
structure.

I did find out that diskdoctor does NOT fix, or even necessarily find,
all filesystem problems.  It ran for a while, grumbled about some things
it found, asked if it was ok to delete some corrupted files, and then
exited with the suggestion to copy my files to another disk and reformat
this one.  Well, apparently something it does as it is exiting causes
the disk validator to run, which was failing with some message about
Key xxx already set.

I spent most of new-years day writing my own version of a filesystem
consistency checker, with emphasis on the consistency of the keys.  It
ran fine on floppies or on ASDG's recoverable ram disk, but I couldn't
get it to run on the hard disk.  Does anyone know what a return of -3 from
DoIO() means?

Anyway, luckily I had just done a full backup of my disk with bru about
4 days before, and the rest of the files that were newer than my backup,
except for one, were all readable, so I was able to reformat the drive and
recover, with the loss of only a single file.

Bru (Backup and Restore Utility) is a program I wrote for my Unix system
about 4 years ago, after taking one look at tar, cpio, volcopy, dump/restore,
etc and saying "yuk!".  I did a quick port to the Amiga about mid-December.
The Alpha 1 version of bru is freely redistributable and will appear on
one of my next disks.  It is also available on the Software distillery
and on BBS-HT (HT Electronics' BBS).  It is the last freely redistributable
version as I intend to eventually make it a commercial product.

So, the question is, have you backed up your hard disk today???

-Fred

-- 
===========================================================================
Fred Fish  Motorola Computer Division, 3013 S 52nd St, Tempe, Az 85282  USA
{seismo!noao!mcdsun,hplabs!well}!fnf    (602) 438-5976
===========================================================================