Last week, I installed efibootmgr, modified the boot order, then reboot.
Then I discover the grub2 boot menu is gone, and EFI always boot into Windows directly. (It is a due boot setup)
When entering system EFI, the boot options for Fedora is gone. Even after hard reset of the “BIOS” settings.
I fixed my problem by manually:
- install systemd-boot (still not helping)
- remove the MS reserved partition that Windows auto created
Then suddenly EFI can detect both boot entries for Windows and Fedora.
What is the safe way of using efibootmgr in a dual boot setup? Any known precautions?