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Reinstall broken bootloader (arch) - Grub2 UEFI
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| # in livedisk terminal: | |
| # refer gparted for diskids (look for root and boot/esp) | |
| # mount root | |
| sudo mount /dev/nvme1n1p2 /mnt | |
| # mount boot/esp | |
| # refer `cat /mnt/etc/fstab` to ensure correct efi path | |
| sudo mount /dev/nvme1n1p1 /mnt/boot/efi | |
| # chroot | |
| arch-chroot /mnt | |
| pacman -S grub efibootmgr os-prober | |
| grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=<ANY_NAME_HERE> | |
| grub-mkconfig -o /boot/grub/grub.cfg |
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Sometimes boot record got accidentally deleted in BIOS..