You must also record the path to the alternate boot device, so the system can boot if the submirror fails.

您还必须记录到备选根设备的路径，这样如果子镜像失败了，系统仍然可以启动。

youdao

Dubbed "Mebroot," the rootkit infects the master boot record (MBR), the first sector of a PC's hard drive that the computer looks to before loading the operating system.

被称为“Mebroot”的rootkit感染硬盘主引导记录(MBR)，即个人电脑硬盘的第一个扇区，电脑在装载操作系统前会在这里寻找(主引导记录)。

youdao

It only took a minute to relocate the Linux loader, and System Commander is a dream when it comes to recovering its master boot record.

CNN: Corel Linux 1.0 is praiseworthy but flawed