At https://wiki.debian.org/DebianInstaller/SataRaid are these words:
Not to be confused with the Linux kernel's software RAID feature (Multidisk > Device). This is the preferable and more reliable method to establish > software RAID arrays. > See the Debian installation guide for more information. followed by these instructions: Use the following method only if you want to have a dual-boot system with > Debian and the other operating system on the same Serial ATA RAID: > Set up your fake RAID in the BIOS (see owners manual). I don't want a dual-boot setup. So I went to look at the Debian installation guide <https://www.debian.org/releases/stable/amd64/ch06s03#mdcfg>, which doesn't tell me to do anything one way or the other with fake RAID in the BIOS. I would assume that since I don't want to dual-boot, and therefore don't want fake RAID, but rather only the Linux kernel's software RAID, that I should turn off RAID in my BIOS (UEFI, actually), but when I did so, my installation of Jessie wound up being a little different than what the manual says, and resulted in a non-booting system. So my question: If I don't want to use the BIOS's Fake RAID, and want to use only the Linux kernel's software RAID, do I want to turn RAID off in the BIOS, or leave it on? (I'm expecting to have other issues after solving this one, but I gotta start with the most basic question before I can move forward.) Thanks! -- Kent West <")))>< Westing Peacefully - http://kentwest.blogspot.com

