HP P420 and Gigabyte Z87x-DH3 no boot option

[FoX1335]

Hi i have this motherboard Gigabyte Z87x-DH3 and i have HP P420 SAS controller in it. In windows it works fine, but only for data. I cant find any option in BIOS, how to boot from this sas controller. When i tried install windows on drive connected to this controller it said something like - "not bootable" and didnt let me hit continue button. Or this chipset doesnt support booting from PCIe devices?


Thank you for answers

 

[popatim]

How big is the array? This controller will not boot with an array larger that 2.2TB.
What mode is motherbd in? needs to be in legacy, hybrid or both (legacy+UEFI)
Is the P420 set as the first boot device?

 

[FoX1335]

there is not a P420 in boot option - only dvd drive, and my two hdds (connected to motherboard by sata) , i tried legacy and uefi mode still same
now i have connected only two disks to that controller (2x 450gb sas) in RAID0