kernel panic under install CD boot (cd9660-related)

[Jan Martin Mathiassen]

Hi, I've got a bit of a problem with the install CD. I've tested this on
2.0 and 2.1.0-DEV (i.e. the daily iso downloadable on 2008.08.22). This
happens way before I can make any sort of FS, but the same machine's
booted up XP, Kubuntu and FBSD5.4.
Anyway, what I can see on the bootup screen of that machine now is as
follows:
<quote>
iso_mountroot: can't find rootvp
Root mount failed: 6
Mounting root from cd9660:acd0
no disk named 'acd0'
setrootbyname failed
iso_mountroot: can't find rootvp
Root mount failed: 6
Mounting root from cd9660:acd1
no disk named 'acd1'
setrootbyname failed
iso_mountroot: can't find rootvp
Root mount failed: 6
Mounting root from cd9660:/dev/acd0a
no disk named 'acd0a'
setrootbyname failed
iso_mountroot: can't find rootvp
Root mount failed: 6
</quote>
When I then type "panic", the following appears:

<quote>
panic: panic from console
Trace beginning at frame 0xc872ca8
panic(c05ce64a,c06bc720,c05d0be3,c0872cd8,6) at panic+0x99
panic(c05d0be3,c05ce4a6,696e6170,c0560063,8) at panic+0x99
vfs_mountroot_ask(c4360b70,c06702dc,d7886c3c,87d000,c0872d98) at
vfs_mountroot_ask+0xd7
vfs_mountroot(0,87d000,86fc00,87d000,0) at fvs_mountroot+oxcf
mi_startup(86f000,d,c06b2a38,c0872c24,c0872c0c) at mi_startup+0x99
begin() at begin+0x42
Debugger("panic")
Stopped at Debugger+0x44: movb $0,in_Debugger.0
</quote>
I've run this twice in a row just to verify all the values, in case they
changed. They didn't.
If there is any more information I can provide, please do tell. This
system is not in use in any other way, all data on the HDs etc is
discardable, so anything goes.