Comment 13 for bug 1447978

I noticed something new. First of all, I have 14.04 on one hard drive and 15.04 on another. The default hard drive is the one with 14.04. I get a list from GRUB that prompts me to select which operating system to boot. When I select 15.04, I get the error. When I went into the BIOS, and changed the first boot drive to the one with 15.04, I did not get the error. I also did not get the GRUB screen. Is it possible I have to do something to 14.04 or the GRUB launcher to get 15.04 do boot correctly when the default drive in the 14.04 hard drive?