kubuntu@kubuntu:~$ sudo mount /dev/sda2 /mnt kubuntu@kubuntu:~$ sudo mount /dev/sda1 /mnt/boot/efi kubuntu@kubuntu:~$ sudo mount -o bind /dev /mnt/dev kubuntu@kubuntu:~$ sudo mount -o bind /sys /mnt/sys kubuntu@kubuntu:~$ sudo mount -t proc /proc /mnt/proc kubuntu@kubuntu:~$ sudo cp /proc/mounts /mnt/etc/mtab kubuntu@kubuntu:~$ sudo chroot /mnt /bin/bash root@kubuntu:/# grub-install /dev/sda ** Warning ** : Boot0000 has same label kubuntu ** Warning ** : Boot0001 has same label kubuntu ** Warning ** : Boot0002 has same label kubuntu ** Warning ** : Boot0003 has same label kubuntu ** Warning ** : Boot0004 has same label kubuntu ** Warning ** : Boot0005 has same label kubuntu ** Warning ** : Boot0006 has same label kubuntu ** Warning ** : Boot0009 has same label kubuntu ** Warning ** : Boot000A has same label kubuntu BootCurrent: 000B Timeout: 2 seconds BootOrder: 000C,0009,000A,0006,0003,0002,0004,0005,0001,0000,000B,0007,0008 Boot0000* kubuntu Boot0001* kubuntu Boot0002* kubuntu Boot0003* kubuntu Boot0004* kubuntu Boot0005* kubuntu Boot0006* kubuntu Boot0007* CD/DVD Drive Boot0008* Hard Drive Boot0009* kubuntu Boot000A* kubuntu Boot000B* UEFI: TSSTcorp CDDVDW SH-224DB Boot000C* kubuntu Installation finished. No error reported. root@kubuntu:/# update-grub Generating grub.cfg ... done root@kubuntu:/# exit kubuntu@kubuntu:~$