Subject: Re: CVS commit: basesrc/distrib/utils/mksunbootcd
To: John Nemeth <email@example.com>
From: Luke Mewburn <firstname.lastname@example.org>
Date: 10/11/2002 08:57:30
On Thu, Oct 10, 2002 at 10:41:48AM -0700, John Nemeth wrote:
| On Mar 2, 10:10am, Luke Mewburn wrote:
| } As far as we've been able to tell, the UltraSPARC PROM doesn't use the
| } .slicemap file. When you do "boot cdrom" on an UltraSPARC it just
| } tries "boot cdrom:f" by default. Or at least, as far as the people
| } who tested the images that I built have found anyway, because my test
| } images did not have a .slicemap file...
| So, what you are saying is that you just have to put the sun4u
| boot code in the correct partition?
Yes, as far as we've been able to determine.
As I said, my test image did NOT have a slicemap file, and I created
it using the infrastructure in distrib/cdrom, which effectively does:
mksunbootcd image sparc.fs sparc.fs sparc.fs /dev/null sparc64.fs
Which puts boot slices in b, c, d, and f.
| I built a multi-boot image for myself (i386, sparc, sparc64).
| It had a .slicemap like this:
| cat NetBSD-1.6/.slicemapfile
| m 1 sun4
| m 2 sun4c
| m 3 sun4m
| m 4 sun4d
| m 5 sun4u
| (Not sure why I included sun4d). The makesunbootcd args matched (i.e.
| four copies of sparcboot.fs followed by one copy of sparc64boot.fs). I
| test booted it on both my SparcStation 5 (sun4m) and my Ultra 1 (sun4u)
| using just "boot cdrom" at the PROM prompt. On the SS5 it came up with
| a script based installer and on the U1 it came up with a sysinst
| installer so I know both machines were booting different partitions.
| Given that I had the sun4u code in the fifth partition, wouldn't that
| have been cdrom:e? If the U1 didn't use the .slicemap file, then how
| did it find the appropriate partition? (I suppose it might have just
| used the last partition on the CD.)
The arguments for mksunbootcd are:
image-to-modify [slice1 [slice2 [slice3 [slice4 [slice5 [...]]]]]]
Since slice numbering starts at 0 (`a' in NetBSD parlance), slice5 == `f'.