qm

dragonflybsd# disklabel ad2s2
# /dev/ad2s2c:
type: SCSI
disk: amnesiac
label: storage 
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 255
sectors/cylinder: 16065
cylinders: 9995
sectors/unit: 160569675
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # milliseconds
track-to-track seek: 0  # milliseconds
drivedata: 0 

16 partitions:
#        size   offset    fstype   [fsize bsize bps/cpg]
  c: 160569675        0    unused        0     0        # (Cyl.    0 - 9994)