my slices are gone

Tom Worster fsb at
Thu Dec 3 21:19:24 UTC 2009

using sysinstall on the 8.0-RELEASE ISO Disk 1, i looked at the status of
the disks and found some alarming things:

the label editor shows no labels on either disk. that seems pretty bad.

and the slice editor says:

Disk slicing warning:
chunk 'ad6p1' [40..409639] does not start on a track boundary
chunk 'ad6p2' [409640..1464784583] does not start on a track boundary

which seems pretty bad in two different ways.

would anyone disagree that freebsd-update -r 8.0-RELEASE upgrade has left
this system unusable and the only next step is reformat at reinstall (that
old windows routine)?


> On 12/3/09 11:14 AM, "Tom Worster" <fsb at> wrote:
>> 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.
> and i'm not getting anywhere with fixit using livefs. it says: "ldconfig could
> not create the hints file" and indeed programs like ls fail in a most
> ugly manner.
> is there anything useful to be done with the holographic shell? the only mount
> i can find is mount_nfs.

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