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problem installing raid0

I'm having trouble setting up raid0 on a debian box running 2.4.4 kernal with raid support, for the first time. I'd appreciate some help working out how to get it going.

installed raidtools and raidtools2. device /dev/md0 was created successfully.

cat /proc/mdstat
        Personalities : [linear] [raid0] [raid1] [raid5] 
				read_ahead not set
				unused devices: <none>

confirmed for raid0 module

cat /etc/modules.conf

	### update-modules: start processing /etc/modutils/raidtools
	alias md-personality-1 linear
	alias md-personality-2 raid0
	alias md-personality-3 raid1
	alias md-personality-4 raid5

### update-modules: end processing /etc/modutils/raidtools

ran "/etc/init.d/modutils restart"

locate raid0
Created two linux partitions /dev/hda5 & /dev/hdb6 of equal size ie approx 27GB.
These partitions were left unmounted.

used "mdcreate -c8k raid0 /dev/md0 /dev/hda5 /dev/hdb6 to create /etc/mdtab"

cat /etc/mdtab
# mdtab entry for /dev/md0
/dev/md0        raid0,8k,0,c4ed3d70     /dev/hda5 /dev/hdb6

ran the command "mdadd -ar" 
stderr output
/dev/hda5: No such device
/dev/hdb6: No such device
/dev/md0: No such device

[10] also tried creating a raidtab file and executing this with mkraid
cat /etc/raid/raidtab

#This is a RAID 0 (Stripe, no parity) configuration
     raiddev         /dev/md0          # Specify RAID device for config
		 raid-level      0                 # Specify type of RAID [linear,0,1 etc]
		 nr-raid-disks   2                 # Specify number disks in stripe
		 persistent-superblock 1           # Allow RAID to autodetect on boot
		 chunk-size      32                # 4k to 4M emperically determined
		 device          /dev/hda5         # Specify device for 1st RAID disk
		 raid-disk       0                 #First disk of RAID
		 device          /dev/hdb6         # Specify device for 2nd RAID disk
		 raid-disk       1                 # Second disk of RAID

running "mkraid /etc/raid/raidtab" lead to stderr output: 
	mkraid version 0.36.4
	parsing configuration file
	raid level 0 not supported

Kind regards

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