Here’s a quick tip for all you Gentoo installers out there that have your lovely NVRAID (nVidia RAID), but can’t seem to get fdisk to work. Here’s what you have to do:

When you insert your Gentoo CD and boot from it, make sure you add the following switch:

gentoo dodmraid

After bootup, ls /dev/mapper. If you see just a “control” device, that means that it didn’t work for you. However, if you see some other devices (like mine was /dev/mapper/nvidia_bicccbge), then it worked fine and you can use that in replacement for /dev/sda and so on during setup.

Just make sure that when you format, it’s not /dev/sda1, etc., but rather /dev/mapper/your_raid_setupX, where X is the partition number.

Happy Compiling!

~Jaker
More information: Gentoo Wiki

—–