Acer Altos R520 用户手册
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Boot Manager
The Boot Manager menu lets you set the device priority during system
bootup. The server will attempt to boot from the first device on the
list. If the first device is not available, it will continue down the list until
it reaches an available device. Select a boot option, then press Enter.
bootup. The server will attempt to boot from the first device on the
list. If the first device is not available, it will continue down the list until
it reaches an available device. Select a boot option, then press Enter.