I have 2 Ubuntu 64-Bit installations on 2 different partitions.
I have added a 2nd UEFI boot directory:
/boot/efi/EFI/ubuntu-64
After booting into the 2nd installation, I have changed in /etc/default/grub:
GRUB_DISTRIBUTOR="Ubuntu-64"
After grub-install and update-grub I got new .efi files in /boot/efi/EFI/ubuntu-64 and a new /boot/grub/grub.cfg and /boot/efi/EFI/ubuntu-64/grub.cfg refers to the partition of the 2nd installation.
When I again boot via /boot/efi/EFI/ubuntu-64 the /boot/grub/grub.cfg of the 1st installation is processed instead the one of the 2nd installation. I think, this is wrong.
Looking into /boot/efi/EFI/ubuntu-64/grubx64.efi of the 2nd installation with a hex editor I find the string EFI/ubuntu instead EFI/ubuntu-64.
I have 2 Ubuntu 64-Bit installations on 2 different partitions. EFI/ubuntu- 64 R="Ubuntu- 64" EFI/ubuntu- 64 and a new /boot/grub/grub.cfg and /boot/efi/ EFI/ubuntu- 64/grub. cfg refers to the partition of the 2nd installation.
I have added a 2nd UEFI boot directory:
/boot/efi/
After booting into the 2nd installation, I have changed in /etc/default/grub:
GRUB_DISTRIBUTO
After grub-install and update-grub I got new .efi files in /boot/efi/
When I again boot via /boot/efi/ EFI/ubuntu- 64 the /boot/grub/grub.cfg of the 1st installation is processed instead the one of the 2nd installation. I think, this is wrong.
Looking into /boot/efi/ EFI/ubuntu- 64/grubx64. efi of the 2nd installation with a hex editor I find the string EFI/ubuntu instead EFI/ubuntu-64.