Voici le résultat :
-bash-3.2# rm -rf /Volumes/"Fusion Drive"/"macOS Install Data"
-bash-3.2# kextcache -u /Volumes/"Fusion Drive"
-bash-3.2# diskutil repairVolume /Volumes/"Fusion Drive"
Started file system repair on disk21 Fusion Drive
Verifying storage system
Performing fsck_cs -n -x --lv...