Asus Sabertooth 990fx Gen3 - RAID Option ROM vs AHCI RAID driver.

MrCoyote

Golden Member
Oct 9, 1999
1,001
5
81
Im planning on installing Win8 on two SSD RAID 1. This board has two options for RAID. The old legacy option rom and the new AHCI RAID Driver option. I cant get Win8 to install with the second option. My SSDs are configured as GPT and windows refuses to install. I get an error that the bios may not support my disks.

Regular AHCI mode works fine on both drives. I tried diskpart to set the drives up manually and convert to gpt with offset of 1024kb. I assume this new RAID Driver mode works like software raid in windows? So i install windows on one drive and set up the raid in windows?