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From: smwong@cs.cuhk.hk (Stephen Wong)
Newsgroups: comp.os.386bsd.questions
Subject: tape minor no. meaning (rst interface)
Date: 12 Dec 1994 18:56:29 +0800
Organization: Dept of Computer Science Chinese University of HK
Lines: 28
Message-ID: <3cha8t$5c@pc110.cs.cuhk.hk>
NNTP-Posting-Host: 137.189.5.110

If it is a very basic question, please bear with my ignorance, I
apologize for that!

What is the meaning of tape minor numbers (rst interface) in FreeBSD
2.0-RELEASE?  I find there are rst0, rst0.0, rst0.1, rst0.2, rst0.3 and
nrst* (norewinding?), erst* (what're they?), ct0ctl* (again, what're
they?)

I've attached an Exabyte EX8200 tape drive to the system (a NCR53c810
SCSI bus), but I can only read/write to rst0.2, but not other rst0*,
why?

Which minor number should I use for the command 'mt'?  I want to do
rewind, offline, erase, etc. stuff.  But whenever I issued mt status
command, the OS complaints with something like:

7: unknown tape type

How to cope with it?  I also tried to attach a Tandberg 3600 QIC tape
drive to the SCSI bus, the bootup message identified it as "a known
rouge", what did that mean?  But the mt command also fails on the
Tandberg!

Can anyone enlighten me?

Thanks in advance.

Stephen Wong.