Migrating Boot Device fom SCSI to SATA

I am trying to transfer the boot partition from a Windows XP SCSI drive to a
RAID 5 SATA volume on an Addonics Compact RAID enclosure. I created a
large RAID 5 on the Addonics Compact RAID, and then I used a disk partition
management utility to make an image copy from the boot partition on C: to
the Addonics Compact RAID partition. I made the copy before Windows
boots, so there is no issue here about files on the source partition being
locked or used. The image made was a perfect copy of the original.

After creating the new boot partition, I disconnected the SCSI drives and
attempted to boot from the new partition. Even when I specify the new
partition explicitly as the boot device in the system bios, all attempts to
boot from it give back the error that it is not a system disk, and the boot
process for Windows never starts. Is there a trick to making Compact RAID
the boot device on a Windows system? Perhaps some adjustment needs to be
made into boot.ini? Perhaps I need to explicitly disble BIOS in the
Adaptec host adapter?

There is no BIOS boot environment for the eSATA card I am using, which
appears to be based on the Silicon Image 3124 chipset.

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W