LinuxQuestions.org - dumb raid array question

I have a dumb question but was hoping someone might know. I just created a raid1 mirror using my two 500gb sata drives. I created one array

Code:

# mknod /dev/md1 b 9 1

# mdadm --create --verbose /dev/md1 --level=1 --raid-devices=2 /dev/sdb1 /dev/sdc1

# cat /proc/mdstat

Personalities : [raid1]

md1 : active raid1 sdc1[1] sdb1[0]

      488383936 blocks [2/2] [UU]



unused devices: <none>

and the put ext3 on them and added the following to my fstab

Code:

/dev/md1 /u02 ext3 noatime 0 1

When I do a df -h it shows -

Code:

/dev/md/1 459G 199M 435G 1% /u02

Why does it display the array as "/dev/md/1" and not /dev/md1?
And why is there a 199MB loss? I understand the lost+found takes up a little and I lose some when formated but does the lost+found take a certain amount up depending on the size of the partition?

Thanks,
Nick