Control: tag -1 moreinfo Sorry for our long delay in replying to this.
On Mon, Mar 08, 2021 at 02:20:08PM +1100, Anand Kumria wrote: > grub went into grub rescue mode and displayed: > > error: symbol `grub_is_lockdown` not found In general, this means that grub-install is not installing to the place that your firmware is actually booting from, which causes the core image (installed to a file under /boot/efi/ on UEFI systems) to be out of sync with the modules (installed to a subdirectory of /boot/grub/). This is much rarer on UEFI systems than on BIOS systems, but it's still possible in some misconfigured cases. Could you please attach the output of "sudo grub-install --debug", "sudo efibootmgr -v", and "sudo find /boot/efi -ls"? > Currently, I am booting using a rescue CD and then entering commands to > manually start the laptop What commands are you using? > -- Package-specific info: > > *********************** BEGIN /proc/mounts > /dev/sda5 / ext4 rw,relatime,errors=remount-ro 0 0 > /dev/sda6 /home ext4 rw,relatime 0 0 > /dev/sda2 /boot/efi vfat > rw,relatime,fmask=0077,dmask=0077,codepage=437,iocharset=ascii,shortname=mixed,utf8,errors=remount-ro > 0 0 > *********************** END /proc/mounts [...] > *********************** BEGIN /dev/disk/by-id > total 0 > lrwxrwxrwx 1 root root 9 Mar 8 11:14 ata-MATSHITADVD-RAM_UJ8C2_WP18_009183 > -> ../../sr0 > lrwxrwxrwx 1 root root 9 Mar 8 11:14 ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY > -> ../../sda > lrwxrwxrwx 1 root root 10 Mar 8 11:14 > ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY-part1 -> ../../sda1 > lrwxrwxrwx 1 root root 10 Mar 8 11:15 > ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY-part2 -> ../../sda2 > lrwxrwxrwx 1 root root 10 Mar 8 11:14 > ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY-part3 -> ../../sda3 > lrwxrwxrwx 1 root root 10 Mar 8 11:14 > ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY-part4 -> ../../sda4 > lrwxrwxrwx 1 root root 10 Mar 8 11:14 > ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY-part5 -> ../../sda5 > lrwxrwxrwx 1 root root 10 Mar 8 11:15 > ata-TOSHIBA_THNSNS128GCSP_922S10RGT2JY-part6 -> ../../sda6 > *********************** END /dev/disk/by-id > > *********************** BEGIN /dev/disk/by-uuid > total 0 > lrwxrwxrwx 1 root root 10 Mar 8 11:14 141A3D7E1A3D5E44 -> ../../sda4 > lrwxrwxrwx 1 root root 9 Mar 8 11:15 2020-11-30-03-01-21-00 -> ../../sr0 > lrwxrwxrwx 1 root root 10 Mar 8 11:15 26cd5a33-dd28-4968-b2b4-2d134be2e444 > -> ../../sda6 > lrwxrwxrwx 1 root root 10 Mar 8 11:14 A65030AD50308659 -> ../../sda1 > lrwxrwxrwx 1 root root 10 Mar 8 11:15 DE31-8EDF -> ../../sda2 > lrwxrwxrwx 1 root root 10 Mar 8 11:14 a49dde0e-f2e4-4679-8c56-b9013d7b0fd2 > -> ../../sda5 > *********************** END /dev/disk/by-uuid I notice that not all your partitions are mounted. What's on partitions 1, 3, and 4? ("sudo parted -s /dev/sda print" might help.) Thanks, -- Colin Watson (he/him) [cjwat...@debian.org]