thank you Phillip.
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https://bugs.launchpad.net/bugs/1020446
Title:
grub-efi 32 bits fails on 64bits computer
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Hi Phillip,
yes, grub-efi was installed manually after the Ubuntu-32bit install.
** Description changed:
On a 64bits EFI computer (with GPT disk) with pre-installed 64bits
Windows7. Laptop ASUS N76VZ-V2G-T1002V.
- 1) Installed Ubuntu 12.04 32bits in dual-boot. Result:
-
A 64 bit UEFI firmware generally will only load a 64 bit boot loader.
This is a limitation of the firmware, not grub. If you want to run a 32
bit OS on a 64 bit UEFI system, you have to switch it to legacy mode.
** Changed in: grub2 (Ubuntu)
Status: Confirmed = Invalid
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ok, thank you.
That's another reason to make Ubiquity refusing (or advising not) to install
Ubuntu-32bit on a 64-bit UEFI computer... ;)
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https://bugs.launchpad.net/bugs/1020446
Title:
Phillip, please could you provide sources/links showing that 64 bit UEFI
firmware generally will only load a 64 bit boot loader, by firmware limitation
?
or if this is just personal experience, please could you indicate which
firmware/computers you have seen with this limitation ?
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You
I actually came across a blog entry by Matthew Garret ( redhat kernel
guru ) today pleading to hardware vendors not to release 32 bit uefi
only systems where he states the same thing:
http://mjg59.dreamwidth.org/26734.html
I looked over the UEFI specs a bit today too and came to the conclusion
Jonathan,
This bug is about 64-bit computers, so it is not duplicate of Ubuntu i386
images are not compatible with 32-bit UEFI computers..
Concerning your remark, are you saying that you have a grubia32.efi entry
allowing to boot Ubuntu on a 64-bit computer?
If yes, please could you indicate
As stated this doesn't make sense. As the other bugs note, the 32 bit
cd can't boot in efi mode and can't install grub-efi. Did you manually
install grub-efi? Unless you did something like that, then the
installer would have put grub-pc on the system.
** Changed in: grub2 (Ubuntu)
*** This bug is a duplicate of bug 102 ***
https://bugs.launchpad.net/bugs/102
Mounting the EFI partition as /boot/efi (fat32 filesystem) and maunally
installing grub-efi (through chroot) makes a valid entry in the EFI
partition.
** Changed in: grub2 (Ubuntu)
Status: Confirmed
*** This bug is a duplicate of bug 102 ***
https://bugs.launchpad.net/bugs/102
Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: grub2 (Ubuntu)
Status: New = Confirmed
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*** This bug is a duplicate of bug 102 ***
https://bugs.launchpad.net/bugs/102
Another case: http://ubuntuforums.org/showthread.php?t=2056626
** This bug has been marked a duplicate of bug 102
Ubuntu32bits is incompatible with EFI computers
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