Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: Notesfiles $Revision: 1.6.2.17 $; site uiucuxc.UUCP
Path: utzoo!watmath!clyde!burl!ulysses!mhuxj!ihnp4!inuxc!pur-ee!uiucdcs!uiucuxc!gardner
From: gardner@uiucuxc.UUCP
Newsgroups: net.decus
Subject: Re: Orphaned Response
Message-ID: <21400004@uiucuxc.UUCP>
Date: Mon, 19-Nov-84 15:11:00 EST
Article-I.D.: uiucuxc.21400004
Posted: Mon Nov 19 15:11:00 1984
Date-Received: Wed, 21-Nov-84 01:01:07 EST
References: <3399@ecsvax.UUCP>
Lines: 15
Nf-ID: #R:ecsvax:-339900:uiucuxc:21400004:37777777600:623
Nf-From: uiucuxc!gardner    Nov 19 14:11:00 1984

It has been my experienct that physical cleaning rarely restores bad
blocks on the disk.  Often a flakey drive is at fault.  Since the track
positioning info is stored on the same surface as the data, a bad drive
can currupt the disk.  The only cure I have found(which works about half
the time) is to write a program that forces a write to each block on the disk
even the bad ones.  If that doesn't cure the problems, just use it for
a frisbee, as I can't find anyone who will reformat old packs.

	Michael G. Gardner
	University of Illinois
	Computer Services office
	1207 W Springfield
	Urbana, Ill 61801
	217-333-7904