I have t T330 that came with 4 HD's/RAID 10.

I have added a smaller RAID1 array that I want to boot from after I install the OS on it.

I can't see how to change the system to boot from the newer RAID array. 

I have tried the lifecycle controller - it shows the option but it is grayed out and says it is only applicable to legacy not UEFI.

I cannot see an option to change either in OMSA or using the F2 key.

I know there is a command line interface for the PERC controller but I am not sure that'll work.

Any suggestions? Thanks