raid 3rd disk

[Teddy]

I have just managed to set up raid 0 in my pc with 2 identical maxtor plus 9 80 gig hdd's and all is ok. I now need to get at data on another disk which i used to back up my stuff before raid was set-up afresh.
My board now has Ide 1 free to which I attached the drive holding my backup data, but when I reboot I get the message "NTLDR is missing press ctrl,alt del to restart", needless to say it says this again after a restart. Does anyone no how i can setup and access the drive to get my data back.
Mobo is a Gigabyte Ga-7vaxp ultra.

[ski]

That message is appearing and preventing the system from booting because it's probably trying to boot from the data HD that may not have a MBR(master boot record).
Go into BIOS, and see which HD is the boot drive. If it's the data drive, then see if one of the RAID drives can be enabled as the boot drive.

[Paul Komski]

The RAID Volume may possibly be designated as SCSI in the boot order. When the other disk was absent it found the "SCSI" - but, as ski says, enable to boot from your RAID setup by changing the BIOS settings.

Alternatively - if you cannot get that to work - you could try hiding the active partition on the backup drive so that it has no visible boot partition. No good obviously if all your data is on that partition - which would leave you with another possibility of changing the partition from active/primary to logical, using such as Partition Magic.

BTW - the two physical RAID drives should just appear as a single volume. As far as the software (excluding the array management stuff) is concerned the array is just "one disk".