Originally posted by Phillip Susi (psusi):
> The installer doesn't know the machine is UEFI capable if it was
booted in legacy mode. Also they can install in legacy mode and convert
later; it is just booting the installer that does not work in uefi mode.
*****
Please read this (Bug #105094940):
> So if the liveCD/USB is booted in UEFI mode (= /sys/firmware/efi
exists when running Ubiquity), it does not always imply that the UEFI
firmware is setup to boot the HDD in UEFI mode.
> 1) if there is an ESP with Windows EFI file, and no Legacy Windows
boot files (bootmgr+boot/BCD), the firmware is setup to boot the HDD in
UEFI mode, so Ubiquity must install grub-efi
Either way, ubiquity looks to see if /sys/firmware/efi exists in the
live media. It should look for a FAT32 partition (with a boot flag), AKA
an EFI partition, mount it, and check for any EFI files.
If efi-exists, then un-mount it, install grub-efi in the target system, and
add a line in FStab for the efi-partition.
If no efi files are found, or if there is no EFI partition, install grub-pc.
** Changed in: ubiquity (Ubuntu)
Status: Invalid => Confirmed
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https://bugs.launchpad.net/bugs/1025555
Title:
Ubuntu i386 images are not compatible with 32-bit UEFI computers
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