I'm trying to install Ubuntu 11.10. I've got a CD drive and an external USB 1.5TB drive for a hard disk. I go through the install process, create small boot (bootable flag), root and swap partitions on the disk, leaving my data in a big ntfs partition. The install seems to complete fine, but when I reboot, I get "Reboot and Select proper Boot device or Insert Boot Media in selected Boot device and press a key". The bios allows me to select the drive as the first bootable device.
Boot-repair gives me: http://paste.ubuntu.com/1680067/