Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!sun-barr!sun!sally!plocher
From: plocher%sally@Sun.COM (John Plocher)
Newsgroups: comp.unix.microport
Subject: Re: Backups of Distibution Floppies
Message-ID: <106780@sun.Eng.Sun.COM>
Date: 25 May 89 20:42:28 GMT
References: <752@mccc.UUCP> <241@vector.Dallas.TX.US> <105986@sun.Eng.Sun.COM> <758@mccc.UUCP> <106413@sun.Eng.Sun.COM> <763@mccc.UUCP>
Sender: news@sun.Eng.Sun.COM
Reply-To: plocher@sun.UUCP (John Plocher)
Distribution: usa
Organization: Sun Microsystems, Mountain View
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In article <763@mccc.UUCP> pjh@mccc.UUCP (Pete Holsberg) writes:
>Oh.  Other than just trying an install, is there any MSDOS program that
>you know of that could verify that the copy was successful?

Use (pre 3.2) diskcomp or any other disk compare program.  If NU advanced
has such a feature you can use it.

Under Unix I use dd to copy the disks:
	dd if=/dev/rdsk/0s24 ibs=16k of=/usr/tmp/foo
	dd of=/dev/rdsk/0s24 obs=16k if=/usr/tmp/foo

Then I checksum them and write the checksum on the disk label (for next time):

	sum -r /dev/rdsk/0s25

Any disks you got from Microport Tech Support should have the checksum
written on the label.  (Not so with distribution disks)

	+---------------------------------------+
	| checksum                              |
	| +-------------+       disk label      |
	| |  Microport  |                       |
	| |    logo     |                       |
	| +-------------+                       |
	|                                       |
	+---------------------------------------+


   -John Plocher