After installing GRUB in the MBR of the external drive, I was able to boot it directly when connected via USB.

在外置驱动器的MBR中安装了GRUB之后，当通过USB连接时，我可以直接引导该驱动器。

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Just to be sure I kicked off an extra backup and once done did a test boot using the external drive to ensure I had an easy return path to Snow Leopard if things went badly wrong.

我只是要确定，我所开始的这次额外备份在其完成之后，会使用外部驱动来进行一次测试启动，这就确保了如果事情出现了严重错误的话，我会有一种很容易就返回到Snow Leopard中的手段。

youdao

To allow for a clean install to and boot from external SAS storage, you need to ensure the correct Settings in the blade BIOS as well as in the SAS daughter card BIOS.

为了进行顺利的安装和从外部SAS存储引导，需要确保blade BIOS和sas子卡bios中的设置是正确的。

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Both models will include an instant-on external WiFi finder, so you can find a working network without having to open and boot up your laptop.

ENGADGET: Dell Latitude D620, D820 get specs