booting an alternate SCSI disk

[Paul V. O'Neill]

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 at oce.orst.edu
Coastal Imaging Lab
OSU--Oceanography
Corvallis, OR  97331         503-754-3251