From owner-freebsd-scsi Sat Jul 4 06:28:40 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id GAA00738 for freebsd-scsi-outgoing; Sat, 4 Jul 1998 06:28:40 -0700 (PDT) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from IAEhv.nl (root@iaehv.IAEhv.nl [194.151.64.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id GAA00723; Sat, 4 Jul 1998 06:28:37 -0700 (PDT) (envelope-from wjw@surf.IAE.nl) Received: from surf.IAE.nl (root@surf.IAEhv.nl [194.151.66.2]) by IAEhv.nl (8.8.7/8.8.7) with ESMTP id PAA21772; Sat, 4 Jul 1998 15:28:37 +0200 (CEST) Received: (from wjw@localhost) by surf.IAE.nl (8.8.7/8.8.7) id PAA26905; Sat, 4 Jul 1998 15:28:37 +0200 (MET DST) Date: Sat, 4 Jul 1998 15:28:37 +0200 (MET DST) From: Willem Jan Withagen Message-Id: <199807041328.PAA26905@surf.IAE.nl> To: hackers@FreeBSD.ORG Subject: Re: Apollo tapes (was: Variant Link implementation, continued) X-Newsgroups: list.freebsd.hackers In-Reply-To: <199807030025.TAA18925@nospam.hiwaay.net> References: Organization: Internet Access Eindhoven, the Netherlands Cc: scsi@FreeBSD.ORG Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org In article <199807030025.TAA18925@nospam.hiwaay.net> you write: >Willem Jan Withagen writes: >> You ( David Kelly ) write: >> => For dd its "conv=swab". >> => >> => To duplicate your tapes use tcopy(1) if you have two tape drives. Tcopy >> >> Well I can't even dd them of either tape. So I've haven't een gotten into >> data incompatibility issues >> Julian suggested RTFM 'mt blocksize'. Which I'll as soon as I reboot to >> get the tape operational on my FreeBSD box. > >They were written on 4mm DAT? Not something weird like QIC-100? Saw an >HP "development system" which wrote QIC-100 format to DC-6150 tapes, I >think. Tapes had to be formatted. Then they mounted like a filesystem. >Slower than a tax refund. > >In the early bad old days of DAT (more correctly known as DSS) there >were more problems than there should have been with one tape drive not >being able to read tapes from another, all other things the same. Oke, My drive is again on line: [~] wjw@digi> mt stat Present Mode: Density = X3B5/88-185A Blocksize variable ---------available modes--------- Mode 0: Density = 0x00 Blocksize variable Mode 1: Density = X3.136-1986 Blocksize = 512 bytes Mode 2: Density = X3.39-1986 Blocksize variable Mode 3: Density = X3.54-1986 Blocksize variable looking at: man mt: The different density codes are as follows: 0x0 default for device 0xE reserved for ECMA Value Tracks Density(bpi) Code Type Reference Note ........ 0x13 1 61000 DDS CS X3B5/88-185A 4 0x14 1 43245 RLL CS X3.202-1991 4 0x15 1 45434 RLL CS ECMA TC17 4 Which are 3 DAT formats. And thus it is a DDS-coded tape. And thus: How do I read this tape on a: (ncr0:6:0): "HP HP35480A T603" type 1 removable SCSI 2 st0(ncr0:6:0): Sequential-Access I've tried: mt density 0x13 but that buys me very little st0(ncr0:6:0): COMMAND FAILED (4 88) @f0697400. st0(ncr0:6:0): COMMAND FAILED (4 88) @f0697400. st0(ncr0:6:0): Deferred Error: MEDIUM ERROR asc:3b,0 Sequential positioning error Anybody with more suggestions?? (other than finding the "old" tapedrive) --WjW -- Internet Access Eindhoven BV., voice: +31-40-2 393 393, data: +31-40-2 606 606 P.O. 928, 5600 AX Eindhoven, The Netherlands Full Internet connectivity for only fl 12.95 a month. Call now, and login as 'new'. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message