I've been trying to install CentOS 7 AltArch ppc64le onto a new Power 8 system and I want to configure mdraid for the volumes. I can get everything working if I install to a single disk, but when I configure for RAID 1, the system fails to boot. So, is mdraid1 supported for booting a Power 8 system? Tom Leach leach at coas.oregonstate.edu