> I'm assuming the OP means they can't get into UEFI settings to configure UEFI, rather than being unable to boot (legacy) OS's in CSM-BIOS mode?
It is my understanding too.
> Has the drive either been sufficiently wiped to remove the EFI System partition, or have superfluous folders (Ubuntu or GRUB) been removed from the EFI System partition?
- the BootInfo in http://ubuntuforums.org/showpost.php?p=12366098&postcount=1 shows that just after the Ubuntu install there was only 1 file in the ESP: /boot/efi/efi/ubuntu/grubx64.efi
- and Viking777 wrote "Ubuntu 12.10 installed using whole disk.", so i guess that he used the "Erase disk and install Ubuntu" option in Ubiquity. @Viking777: please can you confirm?
> I'm assuming the OP means they can't get into UEFI settings to configure UEFI, rather than being unable to boot (legacy) OS's in CSM-BIOS mode?
It is my understanding too.
> Has the drive either been sufficiently wiped to remove the EFI System partition, or have superfluous folders (Ubuntu or GRUB) been removed from the EFI System partition?
- the BootInfo in http:// ubuntuforums. org/showpost. php?p=12366098& postcount= 1 shows that just after the Ubuntu install there was only 1 file in the ESP: /boot/efi/ efi/ubuntu/ grubx64. efi
- and Viking777 wrote "Ubuntu 12.10 installed using whole disk.", so i guess that he used the "Erase disk and install Ubuntu" option in Ubiquity. @Viking777: please can you confirm?