*BSD News Article 65368


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From: j@uriah.heep.sax.de (J Wunsch)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: boot 2.1 from cdrom
Date: 8 Apr 1996 10:11:10 GMT
Organization: Private BSD site, Dresden
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Message-ID: <4kaonu$4ek@uriah.heep.sax.de>
References: <4jn648$20g@clarknet.clark.net> <4k1jre$krb@uriah.heep.sax.de> <4k9d2p$mmg@nntp1.best.com>
Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch)
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seventek@nntp.best.com (Caffiene Dependent) writes:

> : > i just recently purchased the freebsd 2.1 cdrom set and was wondering
> : > if i could somehow boot off of the live file system cdrom that was
> : > included.  has anybody tried this?  thanks...
> 
> : No, it's rather intended to be a reference.  In particular, you can
> : find the entire source tree unpacked there.

> 	Why not? You should be able to do this on any SCSI card with BIOS 
> (booting capability.. the type that one can attach a SCSI HD as the 
> primary disk to).  I see no reason that this should not work.

When the bootstrap has been designed, BIOS-bootable CD-ROM drives
weren't available.  So the bootstrap has no internal knowledge about
how to find a kernel on a cd9660 file system, it only knows about ufs.
(It would be an either/or decision anyway, 7.5 KB don't spend you
plenty of space to waste.)

This is not to say that it is technically impossible, but it's
impossible with the 2.1R ``live file system'' CD-ROM.

-- 
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. ;-)