-bash-3.2# diskutil info /Volumes/Mac*Quitte l'Utilitaire de disque > relance le Terminal (menu : Utilitaires en haut d'écran) > et passe les 3 commandes rappelées dans mon message #18. Poste les tableaux.
Device Identifier: disk2s1
Device Node: /dev/disk2s1
Whole: No
Part of Whole: disk2
Volume Name: Macintosh HD
Mounted: Yes
Mount Point: /Volumes/Macintosh HD
Partition Type: 41504653-0000-11AA-AA11-00306543ECAC
File System Personality: APFS
Type (Bundle): apfs
Name (User Visible): APFS
Owners: Enabled
OS Can Be Installed: Yes
Booter Disk: disk2s2
Recovery Disk: disk2s3
Media Type: Generic
Protocol: PCI
SMART Status: Verified
Volume UUID: DBD4F48A-8AE8-39F1-A26B-68C175B686F2
Disk / Partition UUID: DBD4F48A-8AE8-39F1-A26B-68C175B686F2
Disk Size: 121.1 GB (121123069952 Bytes) (exactly 236568496 512-Byte-Units)
Device Block Size: 4096 Bytes
Volume Total Space: 121.1 GB (121123069952 Bytes) (exactly 236568496 512-Byte-Units)
Volume Used Space: 100.9 GB (100887138304 Bytes) (exactly 197045192 512-Byte-Units) (83.3%)
Volume Free Space: 20.2 GB (20235931648 Bytes) (exactly 39523304 512-Byte-Units) (16.7%)
Allocation Block Size: 4096 Bytes
Read-Only Media: No
Read-Only Volume: No
Device Location: Internal
Removable Media: Fixed
Solid State: Yes
Hardware AES Support: No
-bash-3.2#