主引导加载程序的工作是查找并加载次引导加载程序(第二阶段)。
The job of the primary boot loader is to find and load the secondary boot loader (stage 2).
前 446个字节是主引导加载程序，其中包含可执行代码和错误消息文本。
The first 446 bytes are the primary boot loader, which contains both executable code and error message text.
通常，Linux都是从硬盘上引导的，其中主引导记录(MBR)中包含主引导加载程序。
Commonly, Linux is booted from a hard disk, where the Master boot Record (MBR) contains the primary boot loader.
MBR中的主引导加载程序是一个 512字节大小的映像，其中包含程序代码和一个小分区表（参见图2）。
The primary boot loader that resides in the MBR is a 512-byte image containing both program code and a small partition table (see Figure 2).
主引导程序是安装在MBR上的第一阶段引导加载程序(见先前的描述)。
Primary boot loaders are where the first stage of the boot loader is installed on the MBR (per the previous description).
说明安装引导加载程序的位置，例如主引导记录(MBR)，然后完成定制过程，并单击OK按钮。
Indicate where you want to install the boot loader, such as Master boot Record (MBR), finish your customization, and click OK.
第一阶段包含了一个简单的引导加载程序(这可以在引导设备的主引导记录MBR中找到)，其作用是加载第二阶段的引导加载程序。
The first stage consists of a simple boot loader (found on the boot device's master boot record, or MBR), whose job is to load the second-stage boot loader.
这种现象称为链式加载(chain loading)，通常发生在位于主引导记录(MBR)中的引导管理器加载一个分区引导记录中的启动加载程序的时候。
This is called chain loading, and it most frequently occurs when the boot manager that is located in the master boot record (MBR) loads the boot loader that is in a partition boot record.
这种现象称为链式加载(chain loading)，通常发生在位于主引导记录(MBR)中的引导管理器加载一个分区引导记录中的启动加载程序的时候。
This is called chain loading, and it most frequently occurs when the boot manager that is located in the master boot record (MBR) loads the boot loader that is in a partition boot record.
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