Soft RAID

I have a raid device where it decided to take one of the partitions offline. I am trying to remove the device and re-add it. I have succeeded making it a spare, but I want to reactivate it. The current output of lsraid -a /dev/md0 shows this result. [dev 9, 0] /dev/md0 652AF425.1C10653E.983839BF.330BDA4A online [dev ?, ?] (unknown) 00000000.00000000.00000000.00000000 missing [dev 3, 67] /dev/hdb3 652AF425.1C10653E.983839BF.330BDA4A good [dev 3, 3] /dev/hda3 652AF425.1C10653E.983839BF.330BDA4A spare How do I remove the unknown device and start the listed spare and ensure it syncs up with /dev/hdb3 rather than the /dev/hda3? Thanks in advance! -- Doug http://www.wildhair.org