Analysis and troubleshooting of common Linux faults

During linux startup, the MBR Master Boot Records, GRUB boot menus, and system initialization configuration files are involved, errors or faults at any stage may cause system crashes or boot exceptions. therefore, be sure to back up your data properly. 1. simulate MBR sector failure because the MBR sector contains the partition records of the entire hard disk, the backup files of this sector must be stored on another hard disk or other storage devices, otherwise, the backup file cannot be read during restoration. Perform the test here. Add a hard disk partition and format it. First, create

During linux startup, the MBR Master Boot Records, GRUB boot menus, and system initialization configuration files are involved, errors or faults at any stage may cause system crashes or boot exceptions. therefore, be sure to back up your data properly.

1. simulate MBR sector failure

Because the MBR sector contains the partition record of the entire hard disk, the backup file of this sector must be stored on another hard disk or another storage device, otherwise, the backup file cannot be read during restoration. Perform the test here.

Add a hard disk partition and format it.

First, create a directory, and then mount the second hard disk.