Have you tried re-adding the new one?
# mdadm -a /dev/md0 /dev/sdb2 # mdadm -a /dev/md1 /dev/sda5
Wow.. thanks.. :-) I think it back online.. :-) more /proc/mdstat Personalities : [raid1] md1 : active raid1 sda5[2] sdb5[1] 6297344 blocks [2/1] [_U] [================>....] recovery = 81.8% (5157504/6297344) finish=0.3min speed=49109K/sec md2 : active raid1 sda6[2] sdb6[1] 2104384 blocks [2/1] [_U] resync=DELAYED md3 : active raid1 sda7[2] sdb7[1] 68573312 blocks [2/1] [_U] resync=DELAYED md4 : active raid1 sda8[0] sdb8[1] 513984 blocks [2/2] [UU] md0 : active raid1 sdb1[2] sda1[0] 104320 blocks [2/1] [U_] resync=DELAYED unused devices: <none> regards, -- Arie Reynaldi Zanahar reymanx at gmail.com http://www.reynaldi.or.id