sudo chroot "/mnt/boot-sav/sda5" dpkg --configure -a xubuntu@xubuntu:~$ sudo chroot "/mnt/boot-sav/sda5" apt-get install -fy Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 15 not upgraded. xubuntu@xubuntu:~$ sudo chroot "/mnt/boot-sav/sda5" apt-get purge -y --force-yes grub* shim-signed linux-signed* Reading package lists... Done Building dependency tree Reading state information... Done Note, selecting 'grub-gfxpayload-lists' for regex 'grub*' Note, selecting 'grub-efi-amd64-bin' for regex 'grub*' Note, selecting 'grub-doc' for regex 'grub*' Note, selecting 'grub-coreboot' for regex 'grub*' Note, selecting 'grub-efi-ia32' for regex 'grub*' Note, selecting 'grub-efi-amd64' for regex 'grub*' Note, selecting 'grub-invaders' for regex 'grub*' Note, selecting 'grub-efi-ia64' for regex 'grub*' Note, selecting 'grub-pc-dbg' for regex 'grub*' Note, selecting 'grub-efi-i386' for regex 'grub*' Note, selecting 'grub-imageboot' for regex 'grub*' Note, selecting 'grub-firmware-qemu' for regex 'grub*' Note, selecting 'grub-common' for regex 'grub*' Note, selecting 'grub-ieee1275' for regex 'grub*' Note, selecting 'grub-efi-ia32-dbg' for regex 'grub*' Note, selecting 'grub-coreboot-bin' for regex 'grub*' Note, selecting 'grub2-common' for regex 'grub*' Note, selecting 'grub-linuxbios' for regex 'grub*' Note, selecting 'grub-ieee1275-bin' for regex 'grub*' Note, selecting 'grub-efi-amd64-dbg' for regex 'grub*' Note, selecting 'grub-legacy-ec2' for regex 'grub*' Note, selecting 'grub-theme-starfield' for regex 'grub*' Note, selecting 'grub2-splashimages' for regex 'grub*' Note, selecting 'grub-efi-amd64-signed' for regex 'grub*' Note, selecting 'grub-emu-dbg' for regex 'grub*' Note, selecting 'grub' for regex 'grub*' Note, selecting 'grub-legacy' for regex 'grub*' Note, selecting 'grub2' for regex 'grub*' Note, selecting 'grub-pc-bin' for regex 'grub*' Note, selecting 'grub-yeeloong' for regex 'grub*' Note, selecting 'grub-efi' for regex 'grub*' Note, selecting 'grub-pc' for regex 'grub*' Note, selecting 'grub-disk' for regex 'grub*' Note, selecting 'grub-splashimages' for regex 'grub*' Note, selecting 'grub-emu' for regex 'grub*' Note, selecting 'grub-ipxe' for regex 'grub*' Note, selecting 'grub-rescue-pc' for regex 'grub*' Note, selecting 'grub-coreboot-dbg' for regex 'grub*' Note, selecting 'grub-efi-ia32-bin' for regex 'grub*' Note, selecting 'grub-ieee1275-dbg' for regex 'grub*' Note, selecting 'grub-legacy-doc' for regex 'grub*' Package 'grub-efi-ia64' is not installed, so not removed Package 'grub-yeeloong' is not installed, so not removed Package 'grub-legacy' is not installed, so not removed Package 'grub-efi-i386' is not installed, so not removed Note, selecting 'linux-signed-generic' for regex 'linux-signed*' Note, selecting 'linux-signed-image-3.13.0-1-generic' for regex 'linux-signed*' Note, selecting 'linux-signed-image-generic' for regex 'linux-signed*' Package 'grub' is not installed, so not removed Package 'grub-doc' is not installed, so not removed Package 'grub-efi' is not installed, so not removed Package 'grub-efi-amd64-dbg' is not installed, so not removed Package 'grub-efi-ia32' is not installed, so not removed Package 'grub-efi-ia32-bin' is not installed, so not removed Package 'grub-efi-ia32-dbg' is not installed, so not removed Package 'grub-gfxpayload-lists' is not installed, so not removed Package 'grub-ipxe' is not installed, so not removed Package 'grub-legacy-doc' is not installed, so not removed Package 'grub-legacy-ec2' is not installed, so not removed Package 'grub-pc' is not installed, so not removed Package 'grub-pc-bin' is not installed, so not removed Package 'grub-pc-dbg' is not installed, so not removed Package 'grub-coreboot' is not installed, so not removed Package 'grub-coreboot-bin' is not installed, so not removed Package 'grub-coreboot-dbg' is not installed, so not removed Package 'grub-disk' is not installed, so not removed Package 'grub-emu' is not installed, so not removed Package 'grub-emu-dbg' is not installed, so not removed Package 'grub-firmware-qemu' is not installed, so not removed Package 'grub-ieee1275' is not installed, so not removed Package 'grub-ieee1275-bin' is not installed, so not removed Package 'grub-ieee1275-dbg' is not installed, so not removed Package 'grub-imageboot' is not installed, so not removed Package 'grub-invaders' is not installed, so not removed Package 'grub-linuxbios' is not installed, so not removed Package 'grub-rescue-pc' is not installed, so not removed Package 'grub-splashimages' is not installed, so not removed Package 'grub-theme-starfield' is not installed, so not removed Package 'grub2' is not installed, so not removed Package 'grub2-splashimages' is not installed, so not removed The following packages were automatically installed and are no longer required: secureboot-db shim Use 'apt-get autoremove' to remove them. The following packages will be REMOVED: grub-common* grub-efi-amd64* grub-efi-amd64-bin* grub-efi-amd64-signed* grub2-common* linux-signed-generic* linux-signed-image-3.13.0-1-generic* linux-signed-image-generic* shim-signed* 0 upgraded, 0 newly installed, 9 to remove and 15 not upgraded. After this operation, 12.9 MB disk space will be freed. (Reading database ... 146214 files and directories currently installed.) Removing shim-signed ... Removing grub-efi-amd64-signed ... Removing grub-efi-amd64 ... Purging configuration files for grub-efi-amd64 ... Removing grub2-common ... Removing grub-efi-amd64-bin ... Removing grub-common ... Purging configuration files for grub-common ... Removing linux-signed-generic ... Removing linux-signed-image-generic ... Removing linux-signed-image-3.13.0-1-generic ... Purging configuration files for linux-signed-image-3.13.0-1-generic ... xubuntu@xubuntu:~$ xubuntu@xubuntu:~$ sudo chroot "/mnt/boot-sav/sda5" apt-get install -y --force-yes grub-pc linux Reading package lists... Done Building dependency tree Reading state information... Done The following packages were automatically installed and are no longer required: efibootmgr secureboot-db shim Use 'apt-get autoremove' to remove them. The following extra packages will be installed: grub-common grub-gfxpayload-lists grub-pc-bin grub2-common Suggested packages: multiboot-doc grub-emu xorriso desktop-base The following NEW packages will be installed: grub-common grub-gfxpayload-lists grub-pc grub-pc-bin grub2-common linux 0 upgraded, 6 newly installed, 0 to remove and 15 not upgraded. Need to get 1,402 kB/2,384 kB of archives. After this operation, 9,316 kB of additional disk space will be used. Get:1 http://fr.archive.ubuntu.com/ubuntu/ trusty/main grub-common amd64 2.00-22 [1,283 kB] Get:2 http://fr.archive.ubuntu.com/ubuntu/ trusty/main grub2-common amd64 2.00-22 [117 kB] Get:3 http://fr.archive.ubuntu.com/ubuntu/ trusty/main linux amd64 3.13.0.1.3 [1,744 B] Fetched 1,402 kB in 0s (7,648 kB/s) Preconfiguring packages ... Selecting previously unselected package grub-common. (Reading database ... 145876 files and directories currently installed.) Unpacking grub-common (from .../grub-common_2.00-22_amd64.deb) ... Selecting previously unselected package grub2-common. Unpacking grub2-common (from .../grub2-common_2.00-22_amd64.deb) ... Selecting previously unselected package grub-pc-bin. Unpacking grub-pc-bin (from .../grub-pc-bin_2.00-22_amd64.deb) ... Selecting previously unselected package grub-pc. Unpacking grub-pc (from .../grub-pc_2.00-22_amd64.deb) ... Selecting previously unselected package grub-gfxpayload-lists. Unpacking grub-gfxpayload-lists (from .../grub-gfxpayload-lists_0.6_amd64.deb) ... Selecting previously unselected package linux. Unpacking linux (from .../linux_3.13.0.1.3_amd64.deb) ... Processing triggers for man-db ... Processing triggers for ureadahead ... Processing triggers for install-info ... Setting up grub-common (2.00-22) ... Setting up linux (3.13.0.1.3) ... Processing triggers for ureadahead ... Setting up grub2-common (2.00-22) ... Setting up grub-pc-bin (2.00-22) ... Setting up grub-gfxpayload-lists (0.6) ... Setting up grub-pc (2.00-22) ... Creating config file /etc/default/grub with new version Installation finished. No error reported. Generating grub.cfg ... Warning: Setting GRUB_TIMEOUT to a non-zero value when GRUB_HIDDEN_TIMEOUT is set is no longer supported. Found linux image: /boot/vmlinuz-3.13.0-1-generic Found initrd image: /boot/initrd.img-3.13.0-1-generic done