Voila, j'ai trouvé une clé USB de 15 Go, j'ai copié les données sur mon bureau pour ne pas les perdre...
Est-ce que pour faire la manip je peux brancher la clé sur le port USB de mon clavier, ou il faut utiliser 1 des 3 ports USB derriére l'écran du Mac?
Le retour de diskutil list est:
"imac-de-nathalie-2:~ Natal$
[Restauré 15 nov. 2019 à 21:27:15]
Last login: Fri Nov 15 21:27:09 on console
Restored session: Ven 15 nov 2019 21:25:37 CET
The default interactive shell is now zsh.
To update your account to use zsh, please run `chsh -s /bin/zsh`.
For more details, please visit https://support.apple.com/kb/HT208050.
imac-de-nathalie-2:~ Natal$ diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *121.3 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_APFS Container disk2 121.1 GB disk0s2
/dev/disk1 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_APFS Container disk2 1000.0 GB disk1s2
/dev/disk2 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +1.1 TB disk2
Physical Stores disk0s2, disk1s2
1: APFS Volume Macintosh HD - Données 382.2 GB disk2s1
2: APFS Volume Preboot 79.8 MB disk2s2
3: APFS Volume Recovery 528.5 MB disk2s3
4: APFS Volume VM 1.1 MB disk2s4
5: APFS Volume Macintosh HD 10.9 GB disk2s5
6: APFS Volume MacOsX pour Illustrator 1.1 MB disk2s6
/dev/disk3 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *2.0 TB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_HFS LaCie 500.0 GB disk3s2
3: Apple_APFS Container disk6 1.5 TB disk3s3
/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk4
1: EFI EFI 209.7 MB disk4s1
2: Apple_APFS Container disk5 499.9 GB disk4s2
/dev/disk5 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +499.9 GB disk5
Physical Store disk4s2
1: APFS Volume Mojave 909.3 KB disk5s1
/dev/disk6 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +1.5 TB disk6
Physical Store disk3s3
1: APFS Volume Clone - Données 749.7 GB disk6s1
2: APFS Volume Clone 10.7 GB disk6s2
3: APFS Volume Preboot 80.1 MB disk6s3
4: APFS Volume Recovery 534.4 MB disk6s4
/dev/disk7 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *3.0 TB disk7
1: EFI EFI 209.7 MB disk7s1
2: Apple_HFS Mac Companion 3.0 TB disk7s2
/dev/disk8 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *15.6 GB disk8
1: Windows_FAT_32 CLEUSB FIL 15.6 GB disk8s1
imac-de-nathalie-2:~ Natal$ "
Merci encore pour ton aide précieuse :)))