If there's no vmlinuz file, call unset root and try with another one set root=(hd0,gpt2) 1.2 Load a linux kernel: grub> linux /boot/vmlinuz- # use TAB to autocomplete version. Ls /boot # if theres a file called vmlinuz or initrd, bingo! (hd0,gpt1), (hd0,gpt2) # you might have other things listed here Start your system 1.1 Figure out which partition is the system one via mounting available partitions and looking for executable kernel file: grub> ls # shows list of disks and partitions available Please look at the "Boot-Repair"-tool from this article: (I had positive experiences with it, when previous steps wouldn't survive the reboot)
#Grub4dos boot commands menu file install
If NOT - you have to go through the steps again an might have to repair or install grub again: this should correct the missing information and it should boot next time. start a "terminal") now, and execute: sudo update-grub or (if grub is in a sub-directory): set prefix=(hd0,1)/boot/grub Now you have to set the boot parameters accordingly - just type the following (with the correct numbers for your case) and after each line press return: set prefix=(hd0,1)/grub or, in case of "UEFI", it look something like: (hd0,1)/efi/boot/grub OR (hd0,1)/efi/grub and so on, until you find: (hd0,1)/boot/grub OR (hd0,1)/grub Then you have to go through each, type something like (depends what is shown by the ls command): ls (hd0,1)/ I think you have to look at something like this article: how-rescue-non-booting-grub-2-linux The boot process can't find the root partition (the part of the disk, that contains the information for starting up the system), so you have to specify its location yourself. Maybe this additional bit of information can help figure out what is going on? I checked with the blkid command and that is the identifier of my linux partition. 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. Why is this happening and how can I ensure that GRUB always loads the menu? EditĪs suggested in the comments, I tried purging the grub-efi package and reinstalling it. I think that the BIOS has EFI enabled, and I installed the GRUB bootloader in /dev/sda. Rebooting without pressing F12 always reboots in command line mode. Using this technique, it always loads the menu. What works is to reboot using Ctrl+Alt+Del, then pressing F12 repeatedly until the normal GRUB menu appears. There is probably a command that I can type to boot from that prompt, but I don't know it.
#Grub4dos boot commands menu file windows
When I turn on the computer, the normal GRUB menu appears most of the time:īut after booting either Linux or Windows then rebooting, I GRUB starts in command line mode, as seen in the following screenshot: I installed Linux Mint on my laptop along with a pre-installed Windows 10.