How to fix Grub with Debian mounting disk and attach local hard disk

Use the Debian installation disk to repair Grub and mount the local hard disk-Debian information for the Linux release. For more information, see the following. As long as you enter the Debian Installer (the hardware identification process may be passed, but it is before the partitioning stage)

You can mount the local hard disk partition.

The device file is not/dev/hdaX.

Instead, they include/dev/ide/host0/bus0/target0/lun0/partX.

/Dev/ide/host0/bus0/target0/lun0/part1 is equivalent to/dev/hda1

Mount the file and run the chroot command to perform a lot of work, such as repairing Grub.

Instance 1, Mount partition:
Start the system with the Debian installation disk and enter the installation program (before the partitioning phase)

Press alt + F2
Press enter to get a Shell

Command
# Mkdir/mnt/1
# Mount/dev/ide/host0/bus0/target0/lun0/part1/mnt/1

Now you have mounted/dev/hda1 to/mnt/1.

Instance 2, repair Grub:
Start the system with the Debian installation disk and enter the installation program (before the partitioning phase)

Press alt + F2
Press enter to get a Shell
(Assume that your Linux disk is/dev/hda in/dev/ide/host0/bus0/target0/lun0/part6)

Command
# Mount/dev/ide/host0/bus0/target0/lun0/part6/mnt
# Chroot/mnt
# Grub-install/dev/hda
# Exit

Yes.