The BIOS can perform a variety of hardware scans looking for bootable devices, and on some systems the BIOS can even try to perform a network boot over Ethernet.
BIOS可以执行各种硬件扫描，从而寻找可引导的设备，在某些系统上，BIOS甚至可以执行通过以太网进行的网络引导。
Setting up such alternate boot devices requires your BIOS to be appropriately configured and may require a particular keystroke during boot to display choices.
要设置这类引导设备，您需要适当配置BIOS；在引导过程中可能还需要一个特殊键击，以便显示一些选项。
The method for setting up boot devices and selecting a boot device at startup is specific to your system and its BIOS.
设置引导设备和选择在启动时引导设备的方法特定于您的系统及其BIOS。
The method for setting up boot devices and selecting a boot device at startup is specific to your system and its BIOS.
设置引导设备和选择在启动时引导设备的方法特定于您的系统及其BIOS。
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