Reboot second Linux with efibootmgr

    I have LibreELEC is installed on a SSD and an other Linux on a second Disk. Default boot option is LibreELEC. I want to reboot into my second Linux from LE and tried "efibootmgr". There is an option to change the default boot once for the next reboot of the System. When i start "efibootmgr" there is this error:

    Quote

    EFI variables are not supported on this system.

    How can i fix that?

    Thread

    LibreELEC Dual Boot

    I'm trying to recover I have 2 partitons:

    HD(0,7) label BOOT

    HD(0,8) label Storage

    I tried selecting a Linux and set the partitions, no success

    I can not get it to boot libreelec however I get an error message /vmlinuz not found when I select a standard linux and can not figure out how to edit the grub config using grub2win

    So I'm reasonable sure I need a customized config, however I've not been able to fine a good example I'm running the latest stable build of libreelec currently and it worked…
    egandt
    June 9, 2020 at 10:55 PM

    LE is booting in the normal way. I though that i can run efibootmgr even LE was not started via efi. That doesn't work? Is there an other way to change the default boot in efi once?

    Quote from sam-y

    LE is booting in the normal way. I though that i can run efibootmgr even LE was not started via efi. That doesn't work?

    EFI API is only accessible after booting with it.

    Quote from sam-y

    Is there an other way to change the default boot in efi once?

    Not possible with Legacy Boot.