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).

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分区表 位于磁盘主引导记录（MBR）之中。

The partition table is located in the master boot record (MBR) of a disk.

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硬盘软故障的数据恢复主要可以从以下几个方面入手：主引导区恢复、分区表恢复、DBR修复零磁道损坏的修复以及文件误删除的数据恢复。

The data recovery of hard disk software failure can be solved by the following ways, the recovery of main boot partition, partition table, DBR, zero track and the file deleted by mistakes.

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