Super ça a l'air d'avoir fonctionné, t'es un chef.
Merci beaucoup.
Resizing to full size (fit to fill)
Started partitioning on disk0s2 Mac HD
Verifying the disk
Verifying file system
Volume could not be unmounted
Using live mode
Performing fsck_hfs -fn -l -x /dev/rdisk0s2
Performing live...