first boot drive 第一启动设备 ; 第一启动
boot drive number 设置成启动盘号
Boot from local drive 退出安装从硬盘启动 ; 从本地驱动器启动 ; 从硬盘启动
Boot Other Drive 四其他引导盘
Specify Boot Logical Drive 指定引导逻辑驱动器
Drive Shaft Boot 传动轴防尘罩
Boot local drive 从本地驱动器启动
The boot drive is usually the first hard drive on the system, but may also be a diskette, CD, or USB key.
引动驱动器通常是系统上的第一个硬盘驱动器，但也可以是一个磁盘、CD 或 USB 密匙。
In order to adapt to a bootable CD-ROM with the computer, some BIOS will also allow the drive designated as the boot drive.
为了适应装有可启动光盘的电脑，一些BIOS还允许将光驱指定为启动驱动器。
I then rebooted and rerun the Xcode installer (in the Applications folder) which then offered to update the development tools on my boot drive.
接着我重启系统并重新运行Xcode安装程序(在Applications目录中)，然后安装程序自动地更新了引导驱动器上的开发工具。
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