won't boot after 8.0-RELEASE upgrade

[Tom Worster]

i sent the following to -questions yesterday morning but had no luck. can
anyone where give me tips or pointers?

tia
tom

after running freebsd-update -r 8.0-RELEASE upgrade my system won't boot. it
gets stuck on mountroot and i can't find the magic word it wants.

the system used to have two sata drives /dev/ad4 and ad6. they were
partitioned and sliced using the deafaults that sysinstall suggested.

at the boot prompt, lsdev says:

disk devices
disk0: BIOS drive C:
disk0s1a: FFS
disk0s1b: swap
disk0s1d: FFS
disk0s1e: FFS
disk0s1f: FFS
disk1: BIOS drive D:
disk1s1a: FFS
disk1s1b: swap
disk1s1d: FFS
disk1s1e: FFS
disk1s1f: FFS

which looks right, although i'm not familiar with the "disk" nomenclature.

entering ? at mountroot mentions ad4 and ad6.

geom_mirror was being used.

i've tried saying "load geom_mirror" and/or "enable-module geom_mirror" at
the boot prompt. neither made any difference.

nothing i've said to mountroot works:

ufs:/dev/ad4s1a
ufs:/dev/ad6s1a
ufs:/dev/mirror/gm0s1a
ufs:/dev/disk0s1a
ufs:/dev/disk1s1a

does anyone know the magic word? i'd be very grateful.

tom

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[Peter Beckman]

On Fri, 4 Dec 2009, Tom Worster wrote:

> i sent the following to -questions yesterday morning but had no luck. can
> anyone where give me tips or pointers?

I had this problem with a Dell M600 blade. I was able to install from a
6.4 ISO, then binary update to 7.0, but when I tried to get to 8.0 I
couldn't boot either.

I gave up trying to fix the issue and installed VMWare ESXi on the blade
and installed FreeBSD 8 on top of that. Not ideal, but I had to get it
working.

Here's what I posted:

http://lists.freebsd.org/pipermail/freebsd-hackers/2009-November/030013.html
http://lists.freebsd.org/pipermail/freebsd-hackers/2009-November/030022.html

On http://drop.io/rk0eoap there is a video of the boot process and where it
died for me:

It hung just after isab0, isa0 and atrtc0 loaded. The last line:

atrtc0: registered as a time-of-day clock (resolution 1000000us)

Beckman
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Peter Beckman Internet Guy
bec...@angryox.com http://www.angryox.com/
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[Tom Worster]

i finally got a 7.1 livefs fixit shell to work and i was able to mount
ad4s1a. i fscb'ed all the slices on ad4 and they look ok.

i changed fstab to refer to /dev/ad4* instead of /dev/ mirror/gm0* and got
rid of geom_mirror_load="YES" from /boot/loader.conf. and i ran gmirror
clear.

none of this did any good. 8.0 just won't mount root from the disk.

any final suggestions before i try dumping the data out on another system
and use the old windows technique (reformat and reinstall the os)?