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- Newsgroups: comp.sys.sgi
- Path: sparky!uunet!spool.mu.edu!sgiblab!sgigate!odin!twilight!zuni!anchor!olson
- From: olson@anchor.esd.sgi.com (Dave Olson)
- Subject: Re: Reading raw blocks from a 9-track tape
- Message-ID: <uijbd2c@zuni.esd.sgi.com>
- Keywords: tape 9-track
- Sender: news@zuni.esd.sgi.com (Net News)
- Organization: Silicon Graphics, Inc. Mountain View, CA
- References: <miket.726353064@teal>
- Date: Thu, 7 Jan 93 06:57:30 GMT
- Lines: 22
-
- In <miket.726353064@teal> miket@teal.csn.org (Mike Tostanoski) writes:
-
- | I have a Qualstar 3402 9-track tape drive on my system (4.0.5). I can use
- | it from backup and tar just fine. I need, however, to read some tapes
- | written by a foreign system. These tapes have variable block lengths and
- | are not ANSI standard.
-
- You need to read the tape with a program that understands the tape
- format. You can easily write a program that tries each read with
- a large block size (64KB is usually enough), and then writes the
- number of bytes actually read to some file or series of files.
-
- You need to use the variable block device to do this. If 'hinv'
- and 'mt stat' report 'unknown' for the tape drive type, you aren't
- going to be able to do this (you will have to modify /usr/sysgen/master.d/tpsc
- and build a new kernel with /etc/autoconfig).
-
- See 'man tps mt' for more info.
- --
- Let no one tell me that silence gives consent, | Dave Olson
- because whoever is silent dissents. | Silicon Graphics, Inc.
- Maria Isabel Barreno | olson@sgi.com
-