install of Ubuntu failed on a EFI & non-GPT system

Bug #916299 reported by YannUbuntu on 2012-01-13
10
This bug affects 2 people
Affects Status Importance Assigned to Milestone
ubiquity (Ubuntu)
High
Unassigned

Bug Description

a user installed Ubuntu in dual-boot with Windows on a non-GPT computer.
The default installation failed (no access to Ubuntu), and broke access to Windows.

Here is the Boot-Info-Script summary after installation:
- stable: http://paste.ubuntu.com/803082
- GIT version: http://paste.ubuntu.com/803319/

We can see the presence of the "insmod efi_gop" , and "insmod efi_uga" in the grub.cfg (does it mean that Ubiquity installed grub-efi?)

Discussion: http://ubuntuforums.org/showthread.php?p=11609132#post11609132

Changed in ubiquity (Ubuntu):
importance: Undecided → High
Colin Watson (cjwatson) wrote :

I'll need /var/log/installer/syslog and preferably also /var/log/installer/partman in order to have a hope of debugging this. Could you please attach them?

Changed in ubiquity (Ubuntu):
status: New → Incomplete
Launchpad Janitor (janitor) wrote :

[Expired for ubiquity (Ubuntu) because there has been no activity for 60 days.]

Changed in ubiquity (Ubuntu):
status: Incomplete → Expired
YannUbuntu (yannubuntu) wrote :

Please find attached /var/log/installer/syslog and partman
The user managed to reinstall GRUB successfully. Current BootInfo: http://paste.ubuntu.com/892926

Remarks:
- the "dmesg | grep EFI" output is much shorter now. (i don't know why, nor what it means)
- when i originally filled the bug, i supposed that Ubiquity used grub-efi because of the presence of the "insmod efi_gop" , and "insmod efi_uga" in the grub.cfg. But currently these elements are still there even with grub-pc, so i guess now that my supposition was wrong, and Ubiquity indeed used grub-pc (but failed) ? if yes, i'll have to re-title this bug.

description: updated
summary: - Ubiquity uses grub-efi instead of grub-pc on non-GPT disk
+ install of 11.10 failed on a EFI & non-GPT system
YannUbuntu (yannubuntu) on 2012-03-21
Changed in ubiquity (Ubuntu):
status: Expired → New

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in ubiquity (Ubuntu):
status: New → Confirmed
YannUbuntu (yannubuntu) wrote :

Hello
Here is another case, this time on 12.04: http://ubuntuforums.org/showthread.php?t=2003442

summary: - install of 11.10 failed on a EFI & non-GPT system
+ install of Ubuntu failed on a EFI & non-GPT system
YannUbuntu (yannubuntu) wrote :

probably duplicate of Bug #1030887

YannUbuntu (yannubuntu) wrote :

In original description, http://paste.ubuntu.com/803319/ , fstab doesn't contain /boot/efi so Ubiquity didn't install grub-efi.
And sda13 ends far (449GB) from the start of the disk.
So the problem is definitely not same as Bug #1015211 , but Bug #1030887 .

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