Description of problem:
When installing on an i7 based system with Intel RAID0 configured in the BIOS, the installer comes up with a dialog:

"Disks sda, sdb contain BIOS RAID metadata but are not part of any recognized BIOS RAID sets. Ignoring disks sda, sdb    [ OK ]"

This setup is recognised perfectly by Fedora 14.

Version-Release number of selected component (if applicable):
Fedora 15 Alpha RC1 DVD

How reproducible:
Every time.

Additional info:
Under F14, here is the output of /proc/mdstat:

Personalities : [raid0] 
md127 : active raid0 sda[1] sdb[0]
      976768000 blocks super external:/md0/0 128k chunks
      
md0 : inactive sdb[1](S) sda[0](S)
      4514 blocks super external:imsm
       
unused devices: <none>

# mdadm --examine /dev/sd[ab]
/dev/sda:
          Magic : Intel Raid ISM Cfg Sig.
        Version : 1.0.00
    Orig Family : 1f67b33f
         Family : 1f67b33f
     Generation : 00000276
           UUID : 0d242700:88229f97:87e814e7:870bc4de
       Checksum : 411845f8 correct
    MPB Sectors : 1
          Disks : 2
   RAID Devices : 1

  Disk00 Serial : 9VMT5K79
          State : active
             Id : 00000000
    Usable Size : 976768654 (465.76 GiB 500.11 GB)

[RAID0]:
           UUID : 3981b2e3:f2e47cb0:1285fa11:ef98308b
     RAID Level : 0
        Members : 2
          Slots : [UU]
      This Slot : 0
     Array Size : 1953536000 (931.52 GiB 1000.21 GB)
   Per Dev Size : 976768264 (465.76 GiB 500.11 GB)
  Sector Offset : 0
    Num Stripes : 3815500
     Chunk Size : 128 KiB
       Reserved : 0
  Migrate State : idle
      Map State : normal
    Dirty State : clean

  Disk01 Serial : 9VMT1APC
          State : active
             Id : 00010000
    Usable Size : 976768654 (465.76 GiB 500.11 GB)
/dev/sdb:
          Magic : Intel Raid ISM Cfg Sig.
        Version : 1.0.00
    Orig Family : 1f67b33f
         Family : 1f67b33f
     Generation : 00000276
           UUID : 0d242700:88229f97:87e814e7:870bc4de
       Checksum : 411845f8 correct
    MPB Sectors : 1
          Disks : 2
   RAID Devices : 1

  Disk01 Serial : 9VMT1APC
          State : active
             Id : 00010000
    Usable Size : 976768654 (465.76 GiB 500.11 GB)

[RAID0]:
           UUID : 3981b2e3:f2e47cb0:1285fa11:ef98308b
     RAID Level : 0
        Members : 2
          Slots : [UU]
      This Slot : 1
     Array Size : 1953536000 (931.52 GiB 1000.21 GB)
   Per Dev Size : 976768264 (465.76 GiB 500.11 GB)
  Sector Offset : 0
    Num Stripes : 3815500
     Chunk Size : 128 KiB
       Reserved : 0
  Migrate State : idle
      Map State : normal
    Dirty State : clean

  Disk00 Serial : 9VMT5K79
          State : active
             Id : 00000000
    Usable Size : 976768654 (465.76 GiB 500.11 GB)