I didn't think Linux supported Fakeraid, but it looks like the dmraid package does support about a dozen adapters. I thought it was particularly interesting what you discovered with libparted. I think I worked around this issue in my software Raid 10 howto with a hard link, I'm curious if it works in your howto. If someone is going to try this guide, first try this command instead of rebuilding parted: With your apropriate raid device  "ln /dev/mapper/blabla /dev/sde" Then try the installer. Thanks for this bit of knowlege.