Réinstaller grub efi aprés une install débian foireuse...
0) récupérer refind et booter dessus (utiliser drivedroid si vous avez un android rooté :x )
http://www.rodsbooks.com/refind/getting.html
1)
[ -d /sys/firmware/efi ] && echo "EFI boot on HDD" || echo "Legacy boot on HDD"
should return "EFI boot on HDD".
2) en ligne de commande et en root (donc sudo -i)
(si sda1 est votre partition EFI)
mount /dev/sda1 /boot/efi
apt-get install --reinstall grub-efi
grub-install /dev/sda
update-grub
You should check afterwards that:
- the bootloader is existing in /boot/efi/EFI/debian/grubx64.efi and
file /boot/efi/EFI/debian/grubx64.efi
/boot/efi/EFI/debian/grubx64.efi: PE32+ executable (EFI application) x86-64 (stripped to external PDB), for MS Windows
- the nvram entry was properly created.
efibootmgr --verbose | grep debian
A TESTER D'URGENCE