Netbsd 5.0 RC2 issues running newfs on ccd volume

I have recently begun testing netbsd 5.0 RC2 200902090142Z and am having
issues configuring the ccd colume.. I am following all steps as before
however I am unable to format the new filesystem.. I get the following error

# newfs  /dev/ccd0a                 
newfs: /dev/ccd0a: open for write: Device busy


# /dev/rccd0d:
type: ccd
disk: ccd
label: fictitious
flags:
bytes/sector: 512
sectors/track: 2048
tracks/cylinder: 1
sectors/cylinder: 2048
cylinders: 953873
total sectors: 1953532992
rpm: 3600
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: 1953532992         0     4.2BSD      0     0     0  # (Cyl.      0 -
953873*)
 d: 1953532992         0     unused      0     0        # (Cyl.      0 -
953873*)

not sure if this a bug or I am doing something wrong. I put this in amd as I
am using the amd64 OS port

Please advice



Regards

Derrick Lobo