-bash-3.2# diskutil eraseDisk apfs MAC gpt disk0
Started erase on disk0
Unmounting disk
Creating the partition map
Waiting for partitions to activate
Formatting disk0s2 as APFS with name MAC
Mounting disk
Finished erase on disk0
-bash-3.2#
Oui, je venais d'installer Catalina,puis j'ai voulu...