Oui je l'ai branché..Je ne vois pas ton DDE dans les tableaux => est-ce qu'il est branché au Mac ?
-bash-3.2# diskutil list ; df -H
/dev/disk0 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +1.8 GB     disk0
   1:                 Apple_APFS Container disk2         1.8 GB     disk0s1
/dev/disk1 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *121.3 GB   disk1
   1:                        EFI EFI                     314.6 MB   disk1s1
   2:                 Apple_APFS Container disk3         121.0 GB   disk1s2
/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +1.8 GB     disk2
                                 Physical Store disk0s1
   1:                APFS Volume macOS Base System       1.6 GB     disk2s1
   2:                APFS Volume Preboot                 77.2 MB    disk2s2
/dev/disk3 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +121.0 GB   disk3
                                 Physical Store disk1s2
   1:                APFS Volume Macintosh HD - Données  103.8 GB   disk3s1
   2:                APFS Volume Preboot                 138.1 MB   disk3s2
   3:                APFS Volume Recovery                610.4 MB   disk3s3
   4:                APFS Volume VM                      2.2 GB     disk3s4
   5:                APFS Volume Macintosh HD            14.1 GB    disk3s5
Filesystem     Size   Used  Avail Capacity iused      ifree %iused  Mounted on
/dev/disk2s1   1.8G   1.6G   118M    94%   53092   17386068    0%   /
devfs          194k   194k     0B   100%     654          0  100%   /dev
/dev/disk2s2   1.8G    77M   118M    40%      46   17439114    0%   /System/Volumes/Preboot
tmpfs          2.7G    37M   2.6G     2%    2023     997977    0%   /System/Volumes/Data
tmpfs           34M   4.1k    34M     1%       6     999994    0%   /Volumes
/dev/disk3s1   121G   104G    17M   100%  733139 1181085301    0%   /Volumes/Macintosh HD - Données
/dev/disk3s5   121G    14G    17M   100%  267623 1181550817    0%   /Volumes/Macintosh HD
/dev/disk2s3   1.8G    29k   118M     1%       4   17439156    0%   /System/Volumes/Data/private/tmp/tmp-mount-9Oss5O
-bash-3.2#Après un peu d'attente, toujours le même retour suite à la commandeSi tu as passé la commande à peine le DDE branché => son disque n'était peut-être pas encore connecté.
diskutil list ; df -H.Réponse identique :--> redémarrez une fois > en revenant dans la session de secours où vous étiez. Repassez-la commande et repostez le retour.
-bash-3.2# diskutil list ; df -H
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *121.3 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk2         121.0 GB   disk0s2
/dev/disk1 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +1.8 GB     disk1
   1:                 Apple_APFS Container disk3         1.8 GB     disk1s1
/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +121.0 GB   disk2
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Données  103.8 GB   disk2s1
   2:                APFS Volume Preboot                 138.1 MB   disk2s2
   3:                APFS Volume Recovery                610.4 MB   disk2s3
   4:                APFS Volume VM                      2.2 GB     disk2s4
   5:                APFS Volume Macintosh HD            14.1 GB    disk2s5
/dev/disk3 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +1.8 GB     disk3
                                 Physical Store disk1s1
   1:                APFS Volume macOS Base System       1.6 GB     disk3s1
   2:                APFS Volume Preboot                 77.2 MB    disk3s2
Filesystem     Size   Used  Avail Capacity iused      ifree %iused  Mounted on
/dev/disk3s1   1.8G   1.6G   118M    94%   53092   17386068    0%   /
devfs          194k   194k     0B   100%     654          0  100%   /dev
/dev/disk3s2   1.8G    77M   118M    40%      46   17439114    0%   /System/Volumes/Preboot
tmpfs          2.7G    23M   2.7G     1%    1969     998031    0%   /System/Volumes/Data
tmpfs           34M   4.1k    34M     1%       6     999994    0%   /Volumes
/dev/disk2s1   121G   104G    17M   100%  733139 1181085301    0%   /Volumes/Macintosh HD - Données
/dev/disk2s5   121G    14G    17M   100%  267623 1181550817    0%   /Volumes/Macintosh HD
/dev/disk3s3   1.8G    29k   118M     1%       4   17439156    0%   /System/Volumes/Data/private/tmp/tmp-mount-653YXE
-bash-3.2#diskutil eraseDisk apfs "Macintosh HD" gpt disk0 
	