I want to install Kubuntu 13.04 together with Windows 7 in UEFI Mode. I installed Windows 7 first, which created the EFI boot partition.
When it come to installing Kubuntu, the installation failed when trying to install Grub-efi on sda with the error that grub-efi install to /target/ failed.
There is a simliar thread with the same problem but on 12.04:
..and the solution was to use 12.10. But I'm using a newer version of (k)ubuntu.
Any Solutions here are highly welcome.
It also doesn't work with just kubuntu on the disk, so it's definitely not a dual boot issue.
I used 12.10 and the installation succeded without any problem except that grub didn't add Windows. Fix that with boot-repair.
I found a Kubuntu Bug entry which says, that it's probably a kernel Bug in 13.04.