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From: guy%gorodish@Sun.COM (Guy Harris)
Newsgroups: comp.bugs.4bsd
Subject: Re: tmscp tape drives give "hard error" on reading too small a record
Message-ID: <17086@sun.uucp>
Date: Tue, 21-Apr-87 15:24:02 EST
Article-I.D.: sun.17086
Posted: Tue Apr 21 15:24:02 1987
Date-Received: Wed, 22-Apr-87 06:18:23 EST
References: <1681@husc6.UUCP> <2412@ulysses.homer.nj.att.com> <1696@husc6.UUCP> <17000@sun.uucp> <1700@husc6.UUCP>
Sender: news@sun.uucp
Reply-To: guy@sun.UUCP (Guy Harris)
Organization: Sun Microsystems, Mountain View
Lines: 26
Keywords: tmscp, TU81, DEC

>/dev/rmt4 and /dev/nrmt4 are two names for the same (no rewind) minor device,
>at least on 4.3BSD and Ultrix 1.2.

Not if you use the 4.3BSD MAKEDEV to make those entries:

#!/bin/sh -
#
# Copyright (c) 1980 Regents of the University of California.
# All rights reserved.  The Berkeley software License Agreement
# specifies the terms and conditions for redistribution.
#
#	@(#)MAKEDEV	4.28 (Berkeley) 4/28/86

	...

		/etc/mknod nrmt$unit	c $chr $four ;: sanity w/pdp11 v7
		/etc/mknod nrmt$eight	c $chr $twelve ;: ditto
		/etc/mknod rmt$unit	c $chr $unit
		/etc/mknod rmt$four	c $chr $four
		/etc/mknod rmt$eight	c $chr $eight
		/etc/mknod rmt$twelve	c $chr $twelve

>It *is* interesting to note that the installation in question was a SUN
>software installation...

Why?