Ubuntu
ubiquity package

grub installs to wrong disk

Bug #230603 reported by Lawrie Abbott on 2008-05-15

This bug report is a duplicate of: Bug #153615: Bootloader options aren't clear. Edit Remove

Affects		Status	Importance	Assigned to	Milestone
	ubiquity (Ubuntu)	Confirmed	Undecided	Unassigned

Bug Description

Installed Hardy to USB connected hard disk. All goes well, but there is no option given where to install grub. It gets installed to Laptop internal hard drive which has windows on it. Consequently trying to boot Windows when the USB device is not connected gives error
nor does grub the boot USB disk either because it thinks it is hd1 when it should be hd0. Installing grub to USB disk and using ms-sys to restore MBR on windows disk fixes all.

Revision history for this message

Jeremy Bícha (jbicha) wrote on 2008-07-14:

During installation, near the end, click the advanced button. Don't install GRUB on your main drive which it defaults to (hd0,0). Change this to your USB disk which is probably (hd1,0) if you have no other drives.

When you boot the the USB disk and get to GRUB, Ubuntu may not launch if GRUB is still pointing to the secondary disk at hd1,0 (because the USB is "primary" to GRUB). Edit the line (press 'e' to edit) and change it from hd1,0 to hd0,0 . Once in Ubuntu you'll want to edit (Alt+F2 then gksu gedit /boot/grub/menu.list ) your GRUB menu to have Ubuntu pointed to hd0,0.