Hello,

i have a system with an harddrive as master on the onboard ide 
controller and 3 other harddisks on an PCI-IDE Controller (Promise 
Ultra 100Tx2). These 3 harddrives are changeable in mobile racks 
(drives for backup different machines).

In the bios is hd0 the boot-disk.

Now if i boot the system without an harddrive on the pci-controller, 
there is no problem and the system boots from wd0a.
If i attach drives to the controller, the system starts but the bootdrive is 
now wd2 and the booting fails. 

Is it possible to fix the bootdrive hd0 to wd0 ? Or is there an other 
solution?

There are not always all 3 drives in the bays.

Sorry for my bad english, i hope you understand what i mean.

Best regards 
R. M. Roppert