Ubuntu32bit generally cannot work on 64bit UEFI computers so Ubiquity32bit should warn the user when EFI can be detected

[YannUbuntu]

ALL THIS BUG DESCRIPTION CONCERNS ONLY 64bit UEFI COMPUTERS
 (= most of Windows8 computers, so sadly most of recent computers)

we have 2 big issues:

1) Ubuntu-32bit ISOs cannot boot in UEFI mode (bug #1025555 ), so Ubuntu32bit will always be installed in Legacy (non-UEFI) mode. Thus, Ubuntu32bit cannot boot after installing it, except if we install an UEFI bootloader such as grub-efi.

2) According to comment 7 of Bug #1020446 , 64-bit UEFI firmwares generally will only load a 64 bit boot loader. This is a limitation of the firmware.

So in most cases, installing Ubuntu-32bit fails, and there is no way to make it work !!!
(except if we turn the firmware in Legacy mode, but in this case Windows8 won't boot any more...)

I let Ubuntu devs find a solution, but I'd suggest that the installer (Ubiquity) of 32bit ISOs should strongly recommend to install a 64bit ISO instead. (AND ubuntu download page should propose 64bit by default.)

[Dimitri John Ledkov (xnox)]

ubiquity is not the right project to file bugs against ubuntu.com website content, which will be recommending 64-bit downloads by default for the 13.10 release. Not sure if there is anything else in this bug report.

[YannUbuntu (yannubuntu)]

Dmitrijs, please read carefully.

1) This bug is about 64-bit computers, so it is NOT duplicate of bug #1025555 ("Ubuntu i386 images are not compatible with 32-bit UEFI computers") which obviously is about 32bit computers.

2) this bug is not only about Ubuntu-website, as I also made a suggestion about Ubiquity, and left open to other possible solutions.

[YannUbuntu (yannubuntu)]

ubuntu.com now proposes 64bit image by default.

Still Ubiquity could detect Windows8 presence and ask user to use 64bit instead of 32bit image.