How to change Logical disk number in RAID

[Ayman Altounji]

I've a logical RAID5 disk array which has logical number 2 in RAID setting. Now I want to add one more RAID5 disk array in the same machine. After that, it assign logical number 1 in RAID controller setting. So, my exist drive C: become drive D: and it don't boot any more.
So, is there a way to change the logical number in RAID controller setting from number 2 to 1 which prevent the new array to use logical number 1.

Please help!

[Ayman Altounji]

This sounds strange but here is what I think occured. In the ACU your logical bootable drive is always A, logical drive 0. and array B would be logical drive 1 etc so if you created a new raid set and it became A somehow and your boot became B then you would have to run ACU remove the array you created save setting and reboot and by default the reming array becomes A. So array B would become array A.