in questo pc ho un dual boot, ubuntu lts e mint 20.
all avvio non permette la scelta dell Os e mi dice : System bootorder not found ecc ecc e parte ubuntu.
Vi lascio dei comandi per agevolare
Code: Select all
meg@Meg:~$ efibootmgr -v
efibootmgr: Skipping unreadable variable "Boot0000": Permission denied
BootCurrent: 0000
Timeout: 30 seconds
show_boot_order(): Permission denied
meg@Meg:~$ Code: Select all
meg@Meg:~$ sudo grub-install
Installing for x86_64-efi platform.
GUID Partition Table Header signature is wrong: be5608740128e852 != 5452415020494645
GUID Partition Table Header signature is wrong: 0 != 5452415020494645
GUID Partition Table Header signature is wrong: be5608740128e852 != 5452415020494645
GUID Partition Table Header signature is wrong: 0 != 5452415020494645
GUID Partition Table Header signature is wrong: be5608740128e852 != 5452415020494645
GUID Partition Table Header signature is wrong: 0 != 5452415020494645
Installazione completata, nessun errore segnalato.
meg@Meg:~$ Code: Select all
meg@Meg:~$ efibootmgr -v
BootCurrent: 0000
Timeout: 30 seconds
BootOrder: 0000
Boot0000* ubuntu HD(2,MBR,0x36,0x1358c7fe,0x11ea2002)/HD(2,MBR,0x0,0x1358c800,0x100000)/File(\EFI\ubuntu\shimx64.efi)
meg@Meg:~$ Code: Select all
meg@Meg:~$ sudo os-prober
/dev/sda7:Linux Mint 20 Ulyana (20):LinuxMint:linux
meg@Meg:~$ Code: Select all
meg@Meg:~$ sudo update-grub
Generating grub configuration file ...
Trovata immagine linux: /boot/vmlinuz-4.4.0-210-generic
Trovata immagine initrd: /boot/initrd.img-4.4.0-210-generic
Trovata immagine linux: /boot/vmlinuz-4.4.0-206-generic
Trovata immagine initrd: /boot/initrd.img-4.4.0-206-generic
Trovato Linux Mint 20 Ulyana (20) su /dev/sda7
Adding boot menu entry for EFI firmware configuration
fatto
meg@Meg:~$