seems like the disklabel that netbsd thinks and what
was on there or even the actual spec don't agree: 

alpha500# disklabel sd1
# /dev/rsd1c:
type: SCSI
disk: ST19171W
label:
flags:
bytes/sector: 512
sectors/track: 168
tracks/cylinder: 20
sectors/cylinder: 3360
cylinders: 5268
total sectors: 17783112
rpm: 7200
interleave: 1
trackskew: 20
cylinderskew: 50
headswitch: 0           # milliseconds
track-to-track seek: 0  # milliseconds
drivedata: 0

8 partitions:
#        size   offset     fstype   [fsize bsize  
cpg]
  a:   131072        0     unused        0     0      
  # (Cyl.    0 - 39*)
  b:   262144   131072     unused        0     0      
  # (Cyl.   39*- 117*)
  c: 17783112        0     unused        0     0      
  # (Cyl.    0 - 5292*)
  g: 17782088        0 Linux Ext2        0     0      
  # (Cyl.    0 - 5292*)
  h:     1024 17782088         18                     
  # (Cyl. 5292*- 5292*)


Here is from Seagate:

                            ST-19171W


       UNFORMATTED CAPACITY (MB) ________________11700
       FORMATTED CAPACITY (MB) __________________9100
       AVERAGE SECTORS PER TRACK ________________168
rounded down
       ACTUATOR TYPE
____________________________ROTARY VOICE COIL
       TRACKS
___________________________________105,480
       CYLINDERS ________________________________5,274
user
       HEADS ______PHYSICAL______________________20
       ...cut


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