Path: utzoo!attcan!uunet!lll-winken!lll-lcc!ames!elroy!orion.cf.uci.edu!oberon!pollux.usc.edu!papa
From: papa@pollux.usc.edu (Marco Papa)
Newsgroups: comp.sys.amiga
Subject: Re: Disk-Validator Failure
Keywords: FFS validation
Message-ID: <14441@oberon.USC.EDU>
Date: 4 Jan 89 08:04:23 GMT
References: <304@ibmpa.UUCP>
Sender: news@oberon.USC.EDU
Reply-To: papa@pollux.usc.edu (Marco Papa)
Organization: Felsina Software, Los Angeles, CA
Lines: 32

In article <304@ibmpa.UUCP> saare@ibmpa.UUCP (John Saare) writes:
|This is the problem:
|	Hardware:
                ....
|		Overdrive SCSI Host Adapter
|		Adaptec 4000a SCSI-ST506 xlator
|		70Mb x 2 drives
|
|A low level format using the Overdrive utilities is performed.  The bad block
|scan finds no errors (they never do, sigh...).  

The Adaptec should first write the BAD BLOCK table DURING low-level format.
The bad block table is usually written on top of the drive. Very few 70M
disk are free of defects [though I've seen some].

|The drives are FFS formatted
|one partition per drive.  Fireworks, the Earth moves, etc., everything seems
|to be working fine, THEN ONE DAY:
|As a file is being written, a Volume R/W error requestor appears and I select
|"cancel".

I guess it found one of the BAD sectors that should have been entered at 
lo-level format (right after  MODE SELECT) time.  I recall Matt would "skip"
around these creating separate partitions.  

Anybody can help him with the rest?

-- Marco Papa 'Doc'
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