Voici le résultat d'un [CODE]diskutil list[/CODE]
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icii:~ JPG$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk1 500.1 GB disk0s2
/dev/disk1 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +500.1 GB disk1
Physical Store disk0s2
1: APFS Volume Macintosh HD - Data 328.3 GB disk1s1
2: APFS Volume Preboot 80.2 MB disk1s2
3: APFS Volume Recovery 535.9 MB disk1s3
4: APFS Volume VM 12.9 GB disk1s4
5: APFS Volume Macintosh HD 11.1 GB disk1s5
/dev/disk3 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *960.2 GB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_APFS Container disk5 960.0 GB disk3s2
/dev/disk5 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +ERROR disk5
Physical Store disk3s2
[/CODE]
L'avant dernière ligne ne me dit rien de bon 