Fix 'path /boot/grub2 is not readable by GRUB' Error During Installation

This error message indicates that GRUB (the bootloader) is unable to read the '/boot/grub2' directory during the boot process. As a result, it is not able to complete the installation.

To resolve this issue, you can try the following steps:

1. Boot your system using a LiveCD or USB drive.
2. Open a terminal or console window.
3. Mount the root partition of your system. You can use the following command to find the partition:

sudo fdisk -l

Look for the partition that has the Linux file system (ext4, ext3, etc.).
4. Once you have identified the partition, mount it using the following command:
```bash
sudo mount /dev/sdXY /mnt

Replace '/dev/sdXY' with the actual partition identifier. 5. Mount the necessary directories:

sudo mount --bind /dev /mnt/dev
sudo mount --bind /proc /mnt/proc
sudo mount --bind /sys /mnt/sys

6. Change the root to the mounted partition:

sudo chroot /mnt

7. Reinstall GRUB:
```bash
sudo grub2-install /dev/sdX

Replace '/dev/sdX' with the correct device identifier for your boot disk. 8. Update GRUB:

sudo grub2-mkconfig -o /boot/grub2/grub.cfg

9. Exit the chroot environment:

exit

10. Unmount the partitions:
 ```bash
sudo umount /mnt/sys
sudo umount /mnt/proc
sudo umount /mnt/dev
sudo umount /mnt
 ```
11. Reboot your system.

After following these steps, GRUB should be able to read the '/boot/grub2' directory and complete the installation properly.