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From: dbrockus@cyberhall.com (David Brockus)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: HP Colorado T4000s Tape Drive error messages
Date: Mon, 29 Jul 1996 17:43:55 GMT
Organization: Main Street CyberHall
Lines: 47
Message-ID: <4tiljn$l48@purple.marble.net>
NNTP-Posting-Host: 206.154.165.130
X-Newsreader: Forte Free Agent 1.0.82
I installed an HP Colorado T4000s tape drive (SCSI-2 TR-4 media) in a
FreeBSD 2.0.5R machine with an Adaptec 2940 controller.
I installed the drive in case, configured the kernel, and rebooted.
It recognizes the tape drive.
I ran 'mt' to check the drive status and got this.
cyber1# mt status
Present Mode: Density = 0x45 Blocksize = 512 bytes
---------available modes---------
Mode 0: Density = 0x00 Blocksize variable
Mode 1: Density = 0x00 Blocksize variable
Mode 2: Density = 0x00 Blocksize variable
Mode 3: Density = 0x00 Blocksize variable
I got the following system error message
st0(ahc0:4:0): ILLEGAL REQUEST asc: 24,0 Invalid field in CDB
st0: Cannot set selected mode
What is CDB?
I have obviously missed something, but I am not sure what.
I am new to installing/using tape drives on unix systems, so I
apologize in advance if this is a stupid question.
Is there a device setup file where I specify the density and blocksize
for each mode?
I have found some technical info about the drive and TR-4 media
QIC-3095
Number of Tracks: 73
Bit density: 67,733 (docs didn't say if per inch or not)
Encoding method: RLL1,7
Length: 270 ft.
My problem is what do I do with this information? In the man page for
'mt' that specific bit density is not supported, do I just pick the
closest match?
Any suggestions would be greatly appreciated.
David Brockus