Ca à l'air de marcher...
Bloc de code:
Guillaumes-iMac:~ Heritier$ diskutil eraseVolume jhfs+ "Macintosh HD" disk0s2
Started erase on disk0s2 Macintosh HD
Unmounting disk
Erasing
Initialized /dev/rdisk0s2 as a 931 GB case-insensitive HFS Plus volume with a 81920k journal
Mounting disk
Finished erase on disk0s2 Macintosh HD
Guillaumes-iMac:~ Heritier$