沒玩過兩個擴展分區，多個主分區沒問題。

你幹嘛一定要在Primary 1上裝Linux？弄得支離破碎的。搞個大分區不好嗎？現在Linux已經可以裝到40G以後的分區裏，隨你怎麽裝啦。

我的建議：
分三個Primary就夠了。
Primary 1 for Windows 40G is enought for your daily system and app.

Primary 2 for your Linux. The size depends on your stuff.

Primary 3 as NTFS for your data exchange. Since NTFS write is still trail in Linux, better not write to system partition directly. But XP is sucks not reading anything other than NTFS/FAT/32.