Could not prepare Boot variable: Function not implemented

[Tom Borland]

Cannot install ubuntu 19

ProblemType: Bug
DistroRelease: Ubuntu 19.04
Package: ubiquity 19.04.9
ProcVersionSignature: Ubuntu 5.0.0-13.14-generic 5.0.6
Uname: Linux 5.0.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu27
Architecture: amd64
CasperVersion: 1.405
Date: Sun Apr 28 08:47:48 2019
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 19.04 "Disco Dingo" - Release amd64 (20190416)
SourcePackage: grub-installer
UpgradeStatus: No upgrade log present (probably fresh install)

[Sebastien Bacher (seb128)]

Thank you for your bug report. Could you give some details on your partitions and what options/how you selected those in the installer?

[geole0 (geole0)]

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

[ar barzh paour (yannbaol)]

the same for me
jpb@jpb-HP-ProBook-4710s:~$ sudo efibootmgr --create --disk /dev/sda --part 7 --label "grububuntu" --loader "\efi\ubuntu\grubx64.efi"
[sudo] Mot de passe de jpb :
Could not prepare Boot variable: Function not implemented
jpb@jpb-HP-ProBook-4710s:~$ uname -a && lsb_release -a
Linux jpb-HP-ProBook-4710s 5.8.0-43-generic #49~20.04.1-Ubuntu SMP Fri Feb 5 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS
Release: 20.04
Codename: focal
jpb@jpb-HP-ProBook-4710s:~$ sudo fdisk -l /dev/sda
Disque /dev/sda : 232,91 GiB, 250059350016 octets, 488397168 secteurs
Disk model: Samsung SSD 860
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 : 0xde2df8d4

Périphérique Amorçage Début Fin Secteurs Taille Id Type
/dev/sda1 2048 58593279 58591232 28G 83 Linux
/dev/sda2 58593280 120032733 61439454 29,3G 83 Linux
/dev/sda3 120033280 222433279 102400000 48,8G 83 Linux
/dev/sda4 222435326 352850239 130414914 62,2G 5 Étendue
/dev/sda5 222435328 232675327 10240000 4,9G 83 Linux
/dev/sda6 232677376 310800383 78123008 37,3G 83 Linux
/dev/sda7 * 310802432 310904831 102400 50M ef EFI (FAT-12/16/32)
/dev/sda8 310906880 352850239 41943360 20G 83 Linux
jpb@jpb-HP-ProBook-4710s:~$ efibootmgr -v
BootCurrent: 0005
Timeout: 0 seconds
BootOrder: 0005,0000,0001,0003
Boot0000* Optical Disk Drive BBS(CDROM,�,0x0).......................................................................
Boot0001* Notebook Hard Drive BBS(HD,�,0x0).......................................................................
Boot0002* Notebook Ethernet BBS(128,�,0x0)........................>..............................................
Boot0003* Notebook Ethernet BBS(128,�,0x0)........................>..............................................
Boot0004* USB Hard Drive BBS(HD,�,0x900).......................................................................
Boot0005* ubuntu HD(4,MBR,0xde2df8d4,0xd4217fe,0x7c5f942)/HD(3,MBR,0x0,0x12867800,0x19000)/File(\EFI\ubuntu\shimx64.efi)
jpb@jpb-HP-ProBook-4710s:~$