*BSD News Article 89119


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: CD writer software?
Date: 11 Feb 1997 02:11:36 GMT
Organization: Private BSD site, Dresden
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Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:35463

phtlb@zeus.bris.ac.uk (Tim) wrote:

> I see that wormcontrol supports multi session recording. Is it 
> possible to use mkisofs to record multiple sessions. I'd like to be able

mkisofs 1.06 (still beta) is said to have support for this.

> to write separate directory trees in different sessions. eg write 
> /bin in one session and /usr/bin in another.

Note that the FreeBSD CD-ROM driver has no support for multiple tracks
or ISO 9660 multi-session CDs yet at all.  Well, the driver offers
just the entire data area on the disk without any track boundaries,
this should be sufficient for an ISO 9660 multi-session CD.  However,
mount_cd9660 need to be taught about CD-ROM TOCs.

> Also is is possible to write the output of mkisofs directly to a cd 
> rather than to an intermediate file. Use of suitable buffering should 
> allow this.

I've heard from somebody on a Sun doing this, but i haven't tried
myself.

> Writing directly would be very handy as it would save time and I 
> wouldn't need to leave 600+ Mb of free disk space just for temporary disk 
> images.

It prevents you from test-mounting and test-reading the image though.
And, with about 10 frisbees due to starving the CD-R, you've
compensated for the costs of your 600 MB disk space. :-}

-- 
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. ;-)