I spent many hours trying to figure out a way to dual-boot Ubuntu in a Sony Vaio SVS13115FBB laptop with Windows 7 64-bit. Of course, the difficulties arose because I didn't want to use the legacy BIOS mode (I also kept GPT in the disk, by the way - no intention of switching to MBR).
This comment was also useful, as it contains some very practical basic information on installing Ubuntu in laptops with UEFI.
But the Vaio-specific tip really nailed it (and wasn't easy to find), so here is the link again:
http://bubu-online.blogspot.
See you.
