Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ukma!husc6!rice!sun-spots-request
From: pvo1478@oce.orst.edu (Paul V. O'Neill)
Newsgroups: comp.sys.sun
Subject: booting an alternate SCSI disk
Keywords: SunOS
Message-ID: <8904160002.AA00749@sapphire.oce.orst.edu>
Date: 3 May 89 09:50:58 GMT
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Approved: Sun-Spots@rice.edu
Original-Date: Sat, 15 Apr 89 17:02:02 PDT
X-Sun-Spots-Digest: Volume 7, Issue 263, message 5 of 9

Here's how to boot off sd2 (on a 4.0 4/110 anyway) (it must have /vmunix,
/boot and /boot must be installed w/ installboot.)

>b sd(0,4,0)		/* 4!! */
			/* this boots off sd2a and then mounts sd0a as root */



To boot and run off sd2a: (must have the above and a full root file system.)

>b sd(0,4,0) -a		/* -a = "ask me" -- see Admin Manual */ 
			/* The first time you are asked "mount root on?"
			   answer "sd4a".
			   The 2nd time you are asked "mount root on?"
			   answer "sd2a". */

This was all non-documented and non-intuitive enough that I felt like
sharing it w/ you all.

Paul O'Neill                 pvo@oce.orst.edu
Coastal Imaging Lab
OSU--Oceanography
Corvallis, OR  97331         503-754-3251