my CEO handover me a mac book to install vista on it. this is new for me. i inserted vista dvd, and deleted all partitions (128MB , 115GB mac os), but now i saw a message "you cann't install vista on GPT drive " i got a repair option in vista disk, and got command prompt. using diskpart i created two partitions. 1 partition 128Mb hidden fat (EFI) 0 partition 40000MB ntfs but still getting same message, can any know ho to resovle this issues. thanks.