also i read here:
http://answers.microsoft.com/en-us/windows/forum/windows_7-windows_install/windows-cannot-be-installed-on-this-disk-the/8fa72a3e-10c5-47da-a040-1e0db62af309
that windows 7 x64 installation is supported on uefi systems.
hey how did you get it to boot from the gparted dvd? i burned gparted, but my system doesnt boot off the dvd? i changed the boot order to that its first but nothing.
i have a sony vaio S series also. and wan tto get rid of windows 8. :(