making xd1 bootable?

Brian H. Powell brian at natinst.com
Sun May 7 06:06:18 AEST 1989


I had a bad weekend.  If you want the details, I'd be happy to send you a
story about it.

Among other things, I was trying to clone our boot disk (xd0) onto xd1.
After I set things up (ran installboot, etc.), I halted.  In the monitor,
I set up the eeprom to boot off of xd(0,1,0).  Fine.  I booted, and it got
vmunix off of xd1, as expected.  But it suddenly decided to use the root
and swap off of xd0:

Apr 29 11:00:03 natinst vmunix: root on xd0a fstype 4.2
Apr 29 11:00:03 natinst vmunix: swap on xd0b fstype spec size 20803K
Apr 29 11:00:03 natinst vmunix: dump on xd0b fstype spec

I looked through the documentation, but couldn't find anything that
explained what I was doing wrong.  (Sun doesn't describe how to make an
alternate boot disk very well.)

I tried the monitor command "b -a", and pointed it to xd1 for root and
swap, and that worked fine.  Unfortunately, that information didn't stick,
so the next boot used xd0 for root and swap.

I eventually resorted to changing the drive id of xd1 to 0, and xd0 to 1.
I reset things to boot off of xd(0,0,0), and it worked fine.

What have I done wrong?

Brian H. Powell					National Instruments Corp.
	brian at natinst.com			12109 Technology Blvd.
	uunet!cs.utexas.edu!natinst!brian	Austin, Texas 78727-6204
	AppleLink:NATINST			(512) 250-9119



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