Reinstall Grub to solve the notreadcorrectly error.

Article Title: reinstall Grub to solve the notreadcorrectly error. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.

A ubuntu live cd is started. After Entering linux, go to the command line to restore grub.

First, mount the original/partition

Sudo mkdir/mnt/root

Sudo mount/dev/sda7/mnt/root

Sudo mount-t proc none/mnt/root/proc

Sudo mount-o bind/dev/mnt/root/dev

If you do not know the device name of the/partition, you can use sudo fdisk-l to view the device name.

Use chroot to enter the original/partition

Chroot/mnt/root/bin/bash

Source/etc/profile

Restore grub

Sudo grub-install -- no-floppy/dev/sda

Failed. The message "The file/boot/grub/stage1 not read correctly" is displayed"

I searched related articles from the Internet and found that the partition was caused by a change in the file fstab and mtab.

Edit/etc/mtab and find that/'s partition device is incorrect. Modify the device and run it again.

Grub-install/dev/sda is successful.

After restart, go to grub and select linux. If no partition is found, use e to edit the grub option and change root to the correct partition device.

Then enter command B to start. If you modify menu. lst before restarting, this problem will not occur.