Can find raw device but not mountable (Block) disk device

[Mayuresh <mayuresh%acm.org@localhost>]

I have booted NetBSD 5.1 from an external USB HDD.

I can't find the /dev/sd* device corresponding to internal HDD of this
machine.

However I can find a raw device corresponding to internal disk such as
/dev/rwd0*

Why don't I find the block device that I can mount? Does this depend on
the partition scheme of the device?

Following is the raw device disklabel information.

# disklabel /dev/rwd0
# /dev/rwd0d:
type: ESDI
disk: ST9120823ASG    
label: fictitious
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 16
sectors/cylinder: 1008
cylinders: 232581
total sectors: 234441648
rpm: 3600
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0 

9 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 d: 234441648         0     unused      0     0        # (Cyl.      0 -
232580)
 e:  70332507        63       NTFS                     # (Cyl.      0*-
69774*)
 f:   1024000  70334464 Linux Ext2      0     0        # (Cyl.  69776*-
70792*)
 g: 157696000  71358464 Linux Ext2      0     0        # (Cyl.  70792*-
227236*)
 i:   4096000 229058560       swap                     # (Cyl. 227240*-
231304*)
disklabel: boot block size 0
disklabel: super block size 0


Mayuresh.