This root device is actually a virtualized device coming from the hypervisor, but your servers won't know that.

根设备实际上是来自系统管理程序的一个虚拟的设备，但您的服务器不会知道这一点。

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The kernel checks the hardware and mounts the root device and then looks for the init program on the root filesystem and executes it.

内核检查硬件并加载根设备，然后查找根文件系统的init程序并执行该程序。

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At this stage, the second-stage boot loader checks the system hardware, enumerates the attached hardware devices, mounts the root device, and then loads the necessary kernel modules.

在这个阶段中，第二阶段的引导加载程序会检测系统硬件、枚举系统链接的硬件设备、挂载根设备，然后加载必要的内核模块。

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Finally, the security gurus took a device popular in the US, and used non-encrypted ethernet communication between the terminal and other peripherals to hack into the payment device and take root control.

ENGADGET: Security experts hack payment terminals to steal credit card info, play games

The system asks the top-most full-screen view controller (typically the root view controller) for its supported interface orientations whenever the device rotates or whenever a view controller is presented with the full-screen modal presentation style.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog