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Date: Sun, 21 Jul 1996 12:43:22 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199607210243.MAA21103@godzilla.zeta.org.au>
To: Andries.Brouwer@cwi.nl, bde@zeta.org.au
Subject: Re: installation fails
Cc: questions@freebsd.org
Sender: owner-questions@freebsd.org
X-Loop: FreeBSD.org
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>I use OS/2 BM and LILO. Both boot only from drives that the BIOS
>can access, that is in my case, from drives 0 and 1.

>    If this doesn't work, then any bootable disk, including the install
>    floppy, can be used to boot almost any disk: hit the space bar to make
>    the boot pause, then stare at the prompt to figure out or remind
>    yourself of the syntax, then type the destination, which should look
>    something like 5:sd(2,a)/kernel for the BIOS drive 5 of 0-5 and SCSI
>    drive 2 of 0-2.

>This fails for the same reason. The BIOS does not know about
>SCSI disks, so I have to boot a kernel from floppy or from
>IDE disk 0 or 1 and tell that kernel where its root filesystem is.

0:sd(2,a)/kernel would work to boot from BIOS hard drive 0 to FreeBSD
SCSI drive 2.  Unfortunately, `0:' means hard drive 0 - there is no way
to boot from floppy drive 0 to another drive even when you have loaded
the boot program from floppy drive 0.  Perhaps the BIOS drive number
should be the full number - 0 for floppy drive 0 and 0x80 for hard drive
0.

>For Linux one uses a command line parameter "root=/dev/sdc1"
>to say that it must mount the first partition of the 3rd SCSI disk
>as root filesystem. But what do I say to the FreeBSD kernel?

In FreeBSD the boot parameters aren't preserved yet - you have to
type them at every boot or modify the boot blocks.

Bruce