Bon, je crois que j'ai enfin compris ce que demarrer en rescue veut dire...
Mais du coup je ne comprends pas ce qu'il faut que je tape apres chroot.
J'ai essaye de creer un repertoire /mnt/sysimage pour faire le chroot dedans, mais ca ne marche pas.
Et pour la suite tu dois te douter que ca ne fonctionne pas non plus ...
[root@localhost sysimage]# chroot /mnt/sysimage/
chroot: failed to run command ‘/bin/bash’: No such file or directory
[root@localhost sysimage]# yum reinstall grub2-efi shim
Loaded plugins: langpacks, presto, refresh-packagekit
Resolving Dependencies
--> Running transaction check
---> Package grub2-efi.x86_64 1:2.00-13.fc18 will be reinstalled
---> Package shim.x86_64 0:0.2-3.2.fc18 will be reinstalled
--> Finished Dependency Resolution
Dependencies Resolved
================================================================================
Package Arch Version Repository Size
================================================================================
Reinstalling:
grub2-efi x86_64 1:2.00-13.fc18 fedora 3.5 M
shim x86_64 0.2-3.2.fc18 fedora 353 k
Transaction Summary
================================================================================
Reinstall 2 Packages
Total download size: 3.8 M
Installed size: 20 M
Is this ok [y/N]: y
Downloading Packages:
(1/2): shim-0.2-3.2.fc18.x86_64.rpm | 353 kB 00:10
(2/2): grub2-efi-2.00-13.fc18.x86_64.rpm | 3.5 MB 00:56
--------------------------------------------------------------------------------
Total 69 kB/s | 3.8 MB 00:56
Running Transaction Check
Running Transaction Test
Transaction Test Succeeded
Running Transaction
Installing : 1:grub2-efi-2.00-13.fc18.x86_64 1/2
Installing : shim-0.2-3.2.fc18.x86_64 2/2
Verifying : shim-0.2-3.2.fc18.x86_64 1/2
Verifying : 1:grub2-efi-2.00-13.fc18.x86_64 2/2
Installed:
grub2-efi.x86_64 1:2.00-13.fc18 shim.x86_64 0:0.2-3.2.fc18
Complete!
[root@localhost sysimage]# grub2-mkconfig -o /boot/efi/EFI/fedora/grub.cfg
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.6.10-4.fc18.x86_64
/usr/sbin/grub2-probe: error: cannot find a GRUB drive for /dev/mapper/live-rw. Check your device.map.
/usr/sbin/grub2-probe: error: cannot find a GRUB drive for /dev/mapper/live-rw. Check your device.map.
/usr/sbin/grub2-probe: error: cannot find a GRUB drive for /dev/mapper/live-rw. Check your device.map.
No volume groups found
Found Fedora release 18 (Spherical Cow) on /dev/sda6
done
[root@localhost sysimage]#