On Tue, January 24, 2017 4:14 pm, m.roth at 5-cent.us wrote: > So, it installed happily. > > Then wouldn't boot. No problem, I'll bring it up with pxe, then chroot and > grub2-install. > > Um, nope. I edited the device map from hd0 and hd1 being the RAID to > /dev/sda and /dev/sdb, then ran grup2-install. It now tells me can't > identify the filesystem on hd0, and can't perform a safety check, and > gives up. This is an interesting logical contradiction (unless things progressed much farther than what I last read): If you want to boot off your RAID1 device you need software RAID piece of code already running, i.e. kernel already loaded, to load which which in the first place you needed md0 or whichever device to exist to load it from... The only way around that I remember people were using was: cutting small partition off the drive to keep it as a regular partition, and have /boot on it. The rest of the drive can be different partition which can participate in software RAID. For mirror (RAID-1) I remember people were cutting the same piece off the beginning of both drives, one is always active /boot (another can be maintained as a copy of it, but if you loose first drive, you will need to install grub bootsector to second drive pointing to /boot copy on that drive for loading initramdrive). Anyway, good luck. Getting hardware RAID controller will be waaay less hassle at all stages of your machine's life. Valeri > > What am I missing? Google is not giving me any answers.... > > mark > > _______________________________________________ > CentOS mailing list > CentOS at centos.org > https://lists.centos.org/mailman/listinfo/centos > ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++