Unfortuntatly I'm also facing this problem with the new Ubuntu 10.04 Desktop ISO and Alternate ISO. After trying all possible described ways above I have killed my Fakeraid and installed 10.04 with a Softwareraid. At least I have now my new system back up running. Windows on a second partition is now requirement for me.
Hello Together
Unfortuntatly I'm also facing this problem with the new Ubuntu 10.04 Desktop ISO and Alternate ISO. After trying all possible described ways above I have killed my Fakeraid and installed 10.04 with a Softwareraid. At least I have now my new system back up running. Windows on a second partition is now requirement for me.