[Windows 10] win10開唔到機,想重裝

有個朋友用緊win10忽然炒左boot唔到入windows,
佢1個M2SSD 256G +1TB HD, 入dos 見佢之前安裝gpt分左好多partition,唔研究佢點玩,只係想快D幫佢重裝過windows 因其他野已經幫佢用dos 拉返曬入佢隻1tb度.
想請教係咪好似win7 0甘del曬partito再重裝就ok? (安全起見已經抽走hdd)