Hello I encounter a similar incident a@a:~$ sudo efibootmgr --create --disk /dev/sdb --part 7 --label "grububuntu" --loader "\efi\ubuntu\grubx64.efi" --verbose Could not prepare Boot variable: Function not implemented a@a:~$
a@a:~$ cat /etc/lsb-release DISTRIB_ID=Ubuntu DISTRIB_RELEASE=20.04 DISTRIB_CODENAME=focal DISTRIB_DESCRIPTION="Ubuntu 20.04.2 LTS" a@a:~$ a@a:~$ sudo fdisk -l /dev/sdb Disque /dev/sdb : 3,75 GiB, 4009754624 octets, 7831552 secteurs Disk model: DT 100 G2 Unités : secteur de 1 × 512 = 512 octets Taille de secteur (logique / physique) : 512 octets / 512 octets taille d'E/S (minimale / optimale) : 512 octets / 512 octets Type d'étiquette de disque : dos Identifiant de disque : 0xa935e60d Périphérique Amorçage Début Fin Secteurs Taille Id Type /dev/sdb1 2048 1050623 1048576 512M 83 Linux /dev/sdb2 1050624 2099199 1048576 512M 83 Linux /dev/sdb3 2099200 3147775 1048576 512M 83 Linux /dev/sdb4 3147776 7831551 4683776 2,2G 5 Étendue /dev/sdb5 3149824 4198399 1048576 512M 83 Linux /dev/sdb6 4200448 5249023 1048576 512M 83 Linux /dev/sdb7 * 5251072 6299647 1048576 512M ef EFI (FAT-12/16/32) I ran this command thinking it might work and give a result similar to this one I found in a thread.. efibootmgr -v BootCurrent: 0005 Timeout: 0 seconds BootOrder: 0005,0000,0001,0003 Boot0000* Optical Disk Drive BBS(CDROM,ÿ,0x0)....................................................................... Boot0001* Notebook Hard Drive BBS(HD,ÿ,0x0)....................................................................... Boot0002* Notebook Ethernet BBS(128,ÿ,0x0)........................>.............................................. Boot0003* Notebook Ethernet BBS(128,ÿ,0x0)........................>.............................................. Boot0004* USB Hard Drive BBS(HD,ÿ,0x900)....................................................................... Boot0005* ubuntu HD(4,MBR,0xde2df8d4,0xd4217fe,0x7c5f942)/HD(3,MBR,0x0,0x12867800,0x19000)/File(\EFI\ubuntu\shimx64.efi) what could be the correct coding to install in a logical partition? Thank you -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1826703 Title: Could not prepare Boot variable: Function not implemented To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub-installer/+bug/1826703/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs