I'm using a Samsung Series 5 ultra laptop. I've installed ubuntu 13.04 using a live usb and turned secure boot off and installed in UEFI mode. For some reason when I get to the grub menu, I can choose ubuntu and everything runs fine, however I am unable to choose WIndows 8 as i get the following error:
error: can't find command 'drivemap'
error: invalid EFI file path
I'm a relative n00b , so appreciate any assistance on how i may be able to dual boot.