Can't recover half of a raid1

[Christopher Hicks <chicks@xxxxxxxxxx>]

We had a drive die in a RAID1 array.  I've tried to bring it back so we 
can migrate the data to a new machine and it keeps telling me "/dev/md0 
assembled from 1 drive - not enough to start the array."  I've tried 
everything I've found in the FAQ and wiki to no avail.  What am I missing?
Here's the log of what I've tried:

# mdadm -E /dev/hdb1
/dev/hdb1:
          Magic : a92b4efc
        Version : 00.90.00
           UUID : f8055b6f:766f7a3f:ad80d985:eb77d033
  Creation Time : Thu Feb 19 10:57:42 2004
     Raid Level : raid0
    Device Size : 102398208 (97.65 GiB 104.86 GB)
   Raid Devices : 2
  Total Devices : 2
Preferred Minor : 0

    Update Time : Sat Feb  3 22:56:54 2007
          State : clean
 Active Devices : 2
Working Devices : 2
 Failed Devices : 0
  Spare Devices : 0
       Checksum : 3cadf274 - correct
         Events : 0.44

     Chunk Size : 64K

      Number   Major   Minor   RaidDevice State
this     1       3       65        1      active sync   /dev/hdb1

   0     0       3        2        0      active sync   /dev/hda2
   1     1       3       65        1      active sync   /dev/hdb1
Personalities : [raid0] [raid1] [raid5] [raid6] 
# mdadm  -Af /dev/md0 /dev/hdb1
mdadm: /dev/md0 assembled from 1 drive - not enough to start the array.
# cat /proc/mdstat
md0 : inactive hdb1[1]
      102398208 blocks
unused devices: <none>


--
</chris>

If trees could scream, would we be so cavalier about cutting them down?
We might, if they screamed all the time, for no good reason.
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