在微軟官網找到說明了：

If you have a 32-bit version of Windows XP and want to install a 64-bit version of Windows Vista, you must boot the computer from the 64-bit Windows Vista DVD and then perform a custom installation of Windows Vista. Back up data before you start the custom installation.

不過飆色的部分我就不清楚了。BIOS 設定從光碟機開機，光碟野放入了，結果還是給我跑到 vista 32bit 去，之後還是給我跳出錯誤訊息