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How to boot Ubuntu from EFI/UEFI?
Sorry, I know there have been similar questions, but the answers to them did not help me. I'm trying to install Ubuntu 12.04 on my new Sony Vaio S15 (64 Bit), which uses UEFI, but so far I haven't gotten it to work. Windows 7 has to use UEFI. With Legacy I get an error message: operating system not found, but Ubuntu starts fine from both CD and USB drive. But I don't want to shift back and forth every time I have to use Windows.
Can anybody please tell me what I can do to install Ubuntu using UEFI?
(I don't want to use the Windows installer as it seems I cannot set the size of the partitions myself...)