NetBSD7 RC1 rpi image : Incorrect super block

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

I downloaded the images from following location:

ftp://ftp.netbsd.org/pub/NetBSD/NetBSD-7.0_RC1/evbarm-earmv6hf/binary/gzimg

gunzipped and dd'ed to a Toshiba class 10 microsd 8gb device.

Also tried bs=4k argument (and without it as well) that NetBSD
documentation suggests.

Was unable to boot pi. Tried mounting to check the contents. mount command
shows incorrect super block error. Attaching relevant commands.

# dd if=rpi_inst.img of=/dev/rld0 bs=4k

# mount /dev/ld0a /mnt/usb/
mount_ffs: /dev/ld0a on /mnt/usb: incorrect super block

# disklabel /dev/ld0
# /dev/ld0d:
type: ld
disk: unknown
label: fictitious
flags:
bytes/sector: 512
sectors/track: 63
tracks/cylinder: 64
sectors/cylinder: 4032
cylinders: 3860
total sectors: 15564800
rpm: 7200
interleave: 1
trackskew: 0
cylinderskew: 0
headswitch: 0           # microseconds
track-to-track seek: 0  # microseconds
drivedata: 0

4 partitions:
#        size    offset     fstype [fsize bsize cpg/sgs]
 a:  15564800         0     4.2BSD      0     0     0  # (Cyl.      0 - 3860*)
 d:  15564800         0     unused      0     0        # (Cyl.      0 - 3860*)
disklabel: boot block size 0
disklabel: super block size 0

#dmesg | grep ld0
ld0 at sdmmc0: <SA08G>
ld0: 7600 MB, 3860 cyl, 64 head, 63 sec, 512 bytes/sect x 15564800 sectors
ld0: 4-bit width, bus clock 50.000 MHz