root@advsln.UUCP (root) (07/20/89)
I recently purchased an Apple 40SC tape drive. Electronically everything is fine. I have loaded the tape drive device driver into the kernel with the following commands : /etc/newunix tc /etc/autoconfig -v -S /etc/startup and performed a mknod /dev/rmt/tc1 b 9 0 and mknod /dev/rmt/tc1n b 9 0 to create the appropriate special files (tape is on SCSI id 1). The problem is that : (1) I guessed at the minor number, though I thought 0 seems reasonable and (2) tar, cpio etc can not open the device. I also set the owner and group on the special files to bin. Can someone shed some light on my problem and how does one go about formatting the tapes (diskformat does not seem to be the right utility). Thanks, Bob
donn@radar.uucp (Donn S. Fishbein) (07/23/89)
root@advsln.UUCP (root) writes: >...and performed a mknod /dev/rmt/tc1 b 9 0 and mknod /dev/rmt/tc1n b 9 0 to >create the appropriate special files (tape is on SCSI id 1). >The problem is that : (1) I guessed at the minor number, though I thought 0 >seems reasonable and (2) tar, cpio etc can not open the device. >I also set the owner and group on the special files to bin. >Can someone shed some light on my problem and how >does one go about formatting the tapes (diskformat does not seem to be >the right utility). Here's a couple of lines from my /dev/rmt: crw-rw-rw- 1 root sys 9, 0 Jul 2 12:29 tc0 crw-rw-rw- 1 root sys 9, 8 Jul 2 12:29 tc0n crw-rw-rw- 1 root sys 9, 1 Jul 2 12:29 tc1 crw-rw-rw- 1 root sys 9, 9 Jul 2 12:29 tc1n ..(The minor number is the SCSI ID, or +8 for the tcXn device) As far as formatting tapes, the only thing I've been able to figure out is to use Tape Backup 40SC under MacOS. -- Donn S. Fishbein ..attctc!radar!donn
steveg@tove.umd.edu (Steve Green) (07/24/89)
In article <1989Jul23.150405.4175@radar.uucp] donn@radar.uucp (Donn S. Fishbein) writes: ] root@advsln.UUCP (root) writes: ] ] ...and performed a mknod /dev/rmt/tc1 b 9 0 and mknod /dev/rmt/tc1n b 9 0 to ] ] create the appropriate special files (tape is on SCSI id 1). ] ] ] The problem is that : (1) I guessed at the minor number, though I thought 0 ] ] seems reasonable and (2) tar, cpio etc can not open the device. ] ] ] I also set the owner and group on the special files to bin. ] ] ] Can someone shed some light on my problem and how ] ] does one go about formatting the tapes (diskformat does not seem to be ] ] the right utility). ] ] Here's a couple of lines from my /dev/rmt: ] crw-rw-rw- 1 root sys 9, 0 Jul 2 12:29 tc0 ] crw-rw-rw- 1 root sys 9, 8 Jul 2 12:29 tc0n ] crw-rw-rw- 1 root sys 9, 1 Jul 2 12:29 tc1 ] crw-rw-rw- 1 root sys 9, 9 Jul 2 12:29 tc1n ] ..(The minor number is the SCSI ID, or +8 for the tcXn device) ] ] As far as formatting tapes, the only thing I've been able to figure ] out is to use Tape Backup 40SC under MacOS. Well, I just used newunix tc and then autoconfig and it did it all for me. I used autoconfig -I -o /unix -S /etc/startup -M /etc/master As fas as formatting, you can use mt(1). mt -f/dev/rmt/tc? format PS: dont forget to re-kconfig. 8-( -steveg@tove.umd.edu
rick@Apple.COM (Rick Auricchio) (07/25/89)
In article <18692@mimsy.UUCP> steveg@tove.umd.edu.UUCP (Steve Green) writes: >Well, I just used newunix tc and then autoconfig and it did it all for me. > autoconfig -I -o /unix -S /etc/startup -M /etc/master Yes, unfortunately the -I option (run init scripts) should be the default. Several drivers want that option specified on the autoconfig line. The usual symptom is the lack of /dev nodes. Donn, your guess at minor numbers is close. You probably already suspected that there are a couple of extra bits for things like no-rewind and such. >As far as formatting, you can use mt(1). > mt -f/dev/rmt/tc? format Correct. Expect a 45-minute completion, but at least you don't have to wait around for it. Do it in the background. >PS: dont forget to re-kconfig. 8-( Yes, if you've got useful stuff you like different. You could always stash a copy of /etc/newunix in a safe place, then kconfig /etc/newunix so that you don't have to always redo the kconfig. -- Rick Auricchio, Apple Computer Inc, 20525 Mariani Av MS 27AJ Cupertino CA 95014 sun!apple!rick OR rick@apple.COM Malibu N4364D (408) 974-4227 People who think money can't buy happiness are shopping in the wrong places. My opinion is my own. My employer? They use a windsock and a fire extinguisher.