I installed Linux Mint on my laptop along with a pre-installed Windows 10. When I turn on the computer, the normal GRUB menu appears most of the time:But after booting either Linux or Windows then rebooting, I GRUB starts in command line mode, as seen in the following screenshot:There is probably a command that I can type to boot from that prompt, but I don't know it. What works is to reboot using Ctrl+Alt+Del, then pressing F12 repeatedly until the normal GRUB menu appears. Using this technique, it always loads the menu. Rebooting without pressing F12 always reboots in command line mode.I think that the BIOS has EFI enabled, and I installed the GRUB bootloader in /dev/sda.Why is this happening and how can I ensure that GRUB always loads the menu?EditAs suggested in the comments, I tried purging the grub-efi package and reinstalling it. This did not fix the problem, but now when it starts in command prompt mode, GRUB shows the following message:error: no such device: 6fxxxxx-xxxx-xxxx-xxxx-xxxxxee.Entering rescue mode...grub rescue>I checked with the blkid command and that is the identifier of my linux partition. Maybe this additional bit of information can help figure out what is going on?
GRUB starts in command line after reboot
grub2;dual boot;boot loader;uefi