installer creates unbootable system
| Affects | Status | Importance | Assigned to | Milestone | |
|---|---|---|---|---|---|
| grub-installer (Ubuntu) |
New
|
Undecided
|
Unassigned | ||
Bug Description
Got a new computer, no OS yet, wrote ubuntu-
However, a reboot brings me to the Asus UEFI EZ BIOS screen. The Ubuntu system is unbootable.
This was on a 4TB disk, so a GPT partition table was necessary, and was used.
Ubuntu chose an oldfashioned install with boot code in the MBR.
As it turns out, the problem was that some code, I guess the Asus BIOS, tests bootability by checking the Boot flag of the appropriate partition in the MBR. In this case that appropriate partition is the type ee covering entry for the GPT partition table.
After setting that boot flag (with the fdisk 'a' command) the Ubuntu system booted fine.
Probably grub-install (or whatever software it is that installs this boot code) should always set the Boot flag on the MBR partition.
