Date: Tue, 26 Mar 1996 00:39:25 +0100 (MET) From: J Wunsch <j@uriah.heep.sax.de> To: freebsd-scsi@freebsd.org Cc: robsch@robkaos.ruhr.de (Robert Schien) Subject: Re: HP 4020i CD-R wishes Message-ID: <199603252339.AAA11347@uriah.heep.sax.de> In-Reply-To: <m0u1GWm-00002IC@robkaos.ruhr.de> from "Robert Schien" at Mar 25, 96 06:57:59 pm
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As Robert Schien wrote: > > Well, not only for the HP drive, but this is the CD-R drive I have :-) > I would like to read audio tracks from an audio CD. Writing is > no problem with 'wormcontrol', but how to read? /dev/rworm0 seems > to be write only (at least dd if=/dev/rworm0 ... gives an I/O error). /dev/rworm0 should also be readable. I'm not even sure why it doesn't work (it's supposed to). /dev/worm0 should also be added. There's still the problem that apparently nobody has got a bright idea on how to `clone' the `cd' driver for the `worm' class of devices. CD-R's are a true superclass of CD-ROM, so duplicating the CD-ROM functionality inside the worm driver doesn't seem to make sense. > Another point: how to create multisession discs so that things > like incremental backup is possible? All you need is specifying the ``onp'' parameter in the ``fixate'' command of wormcontrol(8). Very easy, indeed. You'll have a hard time reading the sessions 1 thru N however. :-P (Our CD-ROM driver simply can't do it by now, and the SCSI-2 spec doesn't specify the required commands.) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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