Date: Wed, 13 Dec 1995 15:15:12 -0700 (MST) From: Ade Barkah <mbarkah@hemi.com> To: hackers@freebsd.org Subject: Anyway to get tape head past end of tape mark ? Message-ID: <199512132215.PAA23386@hemi.com>
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Hello, Uhm, I managed to get an end of tape mark to be written at the very beginning of one tape. I don't know much about tapes, but I think that means there are two filemarks written there now. Q: how can I recover from this ? The tape is a Wangtek 5150es (SCSI), attached to a FreeBSD 2.0.5 machine. I'm wondering several questions: 1. Is EOT really signified by two filemarks ? 2. Is this behaviour hardware or software ? That is, can software force the tape to go pass the EOT ? 3. If it's software, can I simply use the tape's MTFSF ioctl to skip over the two filemarks, or do I need to modify the driver ? 4. If it's hardware, can I cut a few feet at the beginning of the tape (hopefully past the EOT mark) and recover that way ? How much of the tape should I cut ? Can I maybe do a 'cat /dev/nrst0 > /dev/null' to force the tape to get to the EOT, eject without rewinding, then cut just past that ? Thanks in advance for any help, -Ade Barkah -------------------------------------------------------------------- Inet: mbarkah@hemi.com - HEMISPHERE ONLINE - www: <http://hemi.com/>; --------------------------------------------------------------------
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