I am running a core I-7 processor and have one 3TB drive with BTRFS and one 3TB drive with EXT4. Oddly unplugging my BTRFS drive and my DVD drive is required to boot from USB. Obviously this is not a very useful solution since it means I cannot use the live disk to install Ubuntu. This seems like a pretty major bug to me.
I am running a core I-7 processor and have one 3TB drive with BTRFS and one 3TB drive with EXT4. Oddly unplugging my BTRFS drive and my DVD drive is required to boot from USB. Obviously this is not a very useful solution since it means I cannot use the live disk to install Ubuntu. This seems like a pretty major bug to me.