I have a disk which apparently has no disklabel, but still boots and
mounts several partitions, and I'm puzzled as to how this can be. Where
is it pulling the partition information from if not the disklabel?
$ df
Filesystem 1K-blocks Used Avail Capacity Mounted on
/dev/ad6s1a 128990 48054 70618 40% /
/dev/ad6s1f 257998 18 237342 0% /tmp
/dev/ad6s1g 151150778 2131440 136927276 2% /usr
/dev/ad6s1e 257998 7546 229814 3% /var
procfs 4 4 0 100% /proc
$ disklabel ad6
# /dev/ad6:
type: unknown
disk: amnesiac
label: fictitious
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 19457
sectors/unit: 312581808
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0 # milliseconds
track-to-track seek: 0 # milliseconds
drivedata: 0
8 partitions:
# size offset fstype [fsize bsize bps/cpg]
c: 312581808 0 unused 0 0 # (Cyl. 0 -
19457*)
$ disklabel -r ad6 ~
disklabel: bad pack magic number (label is damaged, or pack is
unlabeled)
If I boot off the fixit CD, I can't see or mount any FreeBSD partitions
on the disk.
This is on a HP Proliant DL360 Gen 4 with a single Maxtor 160GB SATA
drive running FreeBSD 4.10.
Thanks,
Pete Yandell