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<blockquote data-quote="Patrisku" data-source="post: 13877459" data-attributes="member: 1173919">Bonjour, Je souhaite migrer mon iMac :[ATTACH=full]196077[/ATTACH]... vers macOS High Sierra&nbsp; 10.13.6. J'ai téléchargé le fichier d'installation qui semble être correct :[ATTACH=full]196079[/ATTACH]Lors de l installation j'ai le message suivant :[ATTACH=full]196081[/ATTACH]J'ai consulté le forum sans succés. Je joins une liste de mes disques : [code=bash]Patrisku$ diskutil list/dev/disk0 (internal, physical):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp;&nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp; &nbsp; GUID_partition_scheme&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *250.1 GB&nbsp;&nbsp; disk0&nbsp;&nbsp; 1:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; EFI EFI&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 209.7 MB&nbsp;&nbsp; disk0s1&nbsp;&nbsp; 2:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_CoreStorage fusionDrive&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 249.7 GB&nbsp;&nbsp; disk0s2&nbsp;&nbsp; 3:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Apple_Boot Boot OS X&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 134.2 MB&nbsp;&nbsp; disk0s3/dev/disk1 (internal, physical):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp;&nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp; &nbsp; GUID_partition_scheme&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *2.0 TB&nbsp; &nbsp;&nbsp; disk1&nbsp;&nbsp; 1:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; EFI EFI&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 209.7 MB&nbsp;&nbsp; disk1s1&nbsp;&nbsp; 2:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_CoreStorage fusionDrive&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 2.0 TB&nbsp; &nbsp;&nbsp; disk1s2&nbsp;&nbsp; 3:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Apple_Boot Boot OS X&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 134.2 MB&nbsp;&nbsp; disk1s3&nbsp;&nbsp; 4:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Apple_Boot&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 650.0 MB&nbsp;&nbsp; disk1s4/dev/disk2 (internal, virtual):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp;&nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_HFS FusionDrive&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +2.2 TB&nbsp; &nbsp;&nbsp; disk2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Logical Volume on disk0s2, disk1s2&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; E4C4076D-7771-4E34-B731-B119DBA9C7A1&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; Unencrypted Fusion Drive/dev/disk3 (disk image):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp;&nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp; &nbsp; GUID_partition_scheme&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +9.8 GB&nbsp; &nbsp;&nbsp; disk3&nbsp;&nbsp; 1:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; EFI EFI&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 209.7 MB&nbsp;&nbsp; disk3s1&nbsp;&nbsp; 2:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_HFS InstallESD&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 9.4 GB&nbsp; &nbsp;&nbsp; disk3s2/dev/disk4 (external, physical):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp;&nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp; &nbsp; GUID_partition_scheme&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; *31.6 GB&nbsp; &nbsp; disk4&nbsp;&nbsp; 1:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; EFI EFI&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 209.7 MB&nbsp;&nbsp; disk4s1&nbsp;&nbsp; 2:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_HFS Time Machine&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 31.3 GB&nbsp; &nbsp; disk4s2/dev/disk5 (disk image):&nbsp;&nbsp; #:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; TYPE NAME&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; SIZE&nbsp; &nbsp; &nbsp;&nbsp; IDENTIFIER&nbsp;&nbsp; 0:&nbsp; &nbsp; &nbsp; GUID_partition_scheme&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; +9.8 GB&nbsp; &nbsp;&nbsp; disk5&nbsp;&nbsp; 1:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; EFI EFI&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 209.7 MB&nbsp;&nbsp; disk5s1&nbsp;&nbsp; 2:&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Apple_HFS InstallESD&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 9.4 GB&nbsp; &nbsp;&nbsp; disk5s2[/code]Merci d'avance.</blockquote>

[QUOTE="Patrisku, post: 13877459, member: 1173919"] Bonjour, Je souhaite migrer mon iMac : [CENTER][ATTACH type="full" alt="Capture d’écran 2020-10-28 à 09.45.16.png"]196077[/ATTACH][/CENTER] ... vers macOS High Sierra 10.13.6. J'ai téléchargé le fichier d'installation qui semble être correct : [CENTER][ATTACH type="full" alt="Capture d’écran 2020-10-28 à 09.55.07.png"]196079[/ATTACH][/CENTER] Lors de l installation j'ai le message suivant : [CENTER][ATTACH type="full" alt="Capture d’écran 2020-10-28 à 08.07.48.png"]196081[/ATTACH][/CENTER] J'ai consulté le forum sans succés. Je joins une liste de mes disques : [COLOR=#000000][code=bash]Patrisku$ diskutil list /dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage fusionDrive 249.7 GB disk0s2 3: Apple_Boot Boot OS X 134.2 MB disk0s3 /dev/disk1 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *2.0 TB disk1 1: EFI EFI 209.7 MB disk1s1 2: Apple_CoreStorage fusionDrive 2.0 TB disk1s2 3: Apple_Boot Boot OS X 134.2 MB disk1s3 4: Apple_Boot 650.0 MB disk1s4 /dev/disk2 (internal, virtual): #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS FusionDrive +2.2 TB disk2 Logical Volume on disk0s2, disk1s2 E4C4076D-7771-4E34-B731-B119DBA9C7A1 Unencrypted Fusion Drive /dev/disk3 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme +9.8 GB disk3 1: EFI EFI 209.7 MB disk3s1 2: Apple_HFS InstallESD 9.4 GB disk3s2 /dev/disk4 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *31.6 GB disk4 1: EFI EFI 209.7 MB disk4s1 2: Apple_HFS Time Machine 31.3 GB disk4s2 /dev/disk5 (disk image): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme +9.8 GB disk5 1: EFI EFI 209.7 MB disk5s1 2: Apple_HFS InstallESD 9.4 GB disk5s2[/code][/COLOR] Merci d'avance. [/QUOTE]

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