但要注意一点，如果一个硬盘驱动器不是全新的，该驱动器上可能存在数据，其中可能包含一个引导扇区病毒和其他危险数据。

However, be aware that if the drive is not new out of the box, it may have existing data on it, which could include a boot sector virus and other nasty things.

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可以从支持的设备(如软盘驱动器、CD、USB key或主驱动器上的微小分区)执行初始引导步骤，然后使用外置驱动器进行其他操作。

You can perform the preliminary boot steps from a supported device such as a floppy drive, CD, USB key, or a tiny partition on the main drive, and then use the external drive for everything else.

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