quand je passe la 1ere commande voilà ce que j'obtiens :
-bash-3.2# diskutil eraseVolume jhfs+ Documents disk0s2
Started erase on disk0s2
Unmounting disk
Erasing
newfs_hfs: WriteBuffer: pwrite(3, 0x106afe000, 1048576, 5246976): Input/output error
newfs_hfs: write (sector 10248): Invalid...