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Date: Wed, 23 Aug 1995 12:57:35 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199508230257.MAA32514@godzilla.zeta.org.au>
To: hackers@freebsd.org, pedrosal@nce.ufrj.br
Subject: Re: Changing root and PANIC!
Cc: bugs@freebsd.org, questions@freebsd.org
Sender: hackers-owner@freebsd.org
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>I tried several times to install BSD 2.0.5, but always had the
>same problem: I am using the fourth "slice" of my SCSI hard 
>disk, "sd0s4" for BSD, but when I boot it, comes the message
>"changing root device to sd2a" and PANIC!

>The SCSI id of the disk is 0 and the id of the CD-ROM is 2.
>So, what does mean "sd2a" mean? Is it the second slice of
>the disk or the CD-ROM?

It is the first BSD slice of the third SCSI disk.  The `2'
is probably for BIOS drive number 0x82 (the 3rd BIOS drive
= the first SCSI drive when there are 2 drives before it
in the BIOS drive numbering scheme).

Try booting from hd(1,a)/kernel like the prompt says.  This
only works for the first SCSI drive.

Bruce