Restoring booting of RAID drive on Dell PE 2400

Hi,

Following power supply issues on an old PowerEdge 2400, the server wont detect the boot drive.

The RAID controller is an Adaptec Perc2/Si controller. When the server boots up, it comes up with "System Backplane Firmware 5.24".

Once it is passed the 1st screen, it mentions that the Firmware of the Backplane is out of date, then continues.

It lists processors (2 x 733MHz Pentiums)

Then lists Adaptec Bios

Lists SCSI ID of devices:
SCSI ID 6: Dell 1x6 U2W SCSI BP    ASYN
SCSI ID 0: 9GB disk                             80.0
SCSI ID 1: 9GB disk                             80.0
SCSI ID 2: 9GB disk                             80.0
SCSI ID 3: 9GB disk                             80.0
SCSI ID 4: 18GB disk                           80.0
SCSI ID 5: 9GB disk                             80.0

Then it comes up with another Adaptec Bios screen, and lists the CDROM device

SCSI ID 5: CD-ROM DRIVE:466   20,0

Then it comes up with the "strike F1 to retry boot, F2 for setup utility"

Boot priority is set to:
Hard drive C:
Diskette drive A:
AIC-7880 SCSI CD-ROM Drive

I suspect that the CD-ROM has a SCSI ID the same as one of the drives in the array, but I'm not sure how that would have happened.

I don't want to lose any data on the Drives, and I have not had much experience with troubleshooting SCSI bios on an existing machine.

Please help with this.

Regards,
Martin