有了启用了虚拟化支持的引导内核，接下来的一个步骤是为客户操作系统创建一个磁盘映像。
Using a booted kernel with virtualization support enabled, the next step is to create a disk image for the guest operating system.
虚拟化系统至少须知道有多少请求正在发送到系统。
At a minimum, a virtualization system must know how many requests are being sent into the system.
您可以通过多种方法实现虚拟化，但是最常见的有三种。
You can achieve virtualization in lots of ways, but three important methods are seen most often.
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