Message-ID: <19981230112148.C32696@freebie.lemis.com>
Date: Wed, 30 Dec 1998 11:21:48 +1030
From: Greg Lehey <grog@lemis.com>
To: "Steven M. Schultz" <sms@moe.2bsd.com>, pups@minnie.cs.adfa.oz.au
Subject: Re: rt11 and disk images
References: <199812292107.NAA11417@moe.2bsd.com>
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In-Reply-To: <199812292107.NAA11417@moe.2bsd.com>; from Steven M. Schultz on Tue, Dec 29, 1998 at 01:07:32PM -0800
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On Tuesday, 29 December 1998 at 13:07:32 -0800, Steven M. Schultz wrote:
> 	The TQK25 formats the tape in a 'variable' record mode format that
> 	is (as far as I know) peculiar to DEC (or who ever built the TK25
> 	for them).  This makes the TK25 look and feel like a 9-track drive
> 	(record boundaries are preserved) which is nice.
>
> 	Unfortunately most (all?) QIC drives in the "PC" world end up in a
> 	'fixed record' mode (which loses the concept of record size).   So
> 	while you might have a DC600A drive on a Linux system it will, odds are,
> 	only write in fixed record mode which the TQK25 probably won't like.
> 	Have to try it and see what happens.

I believe the new CAM driver for FreeBSD 3.0 can do variable block
lengths on QIC drives.

Greg
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