Je n'ai rien trouvé sur le site d'apple.
Et donc tu n'arrives pas à installer El Capitan une fois ton vieux Mac démarré sur la clé ? - tu as toujours : "aucun paquet n'a pu être installé" ?
diskutil list
	Last login: Thu Nov 26 14:55:19 on console
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.
MacBook-Pro-de-Ced:~ cedric$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.3 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk1         500.0 GB   disk0s2
/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +500.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Données  337.4 GB   disk1s1
   2:                APFS Volume Preboot                 298.8 MB   disk1s2
   3:                APFS Volume Recovery                655.4 MB   disk1s3
   4:                APFS Volume VM                      5.4 GB     disk1s4
   5:                APFS Volume Macintosh HD            22.7 GB    disk1s5
   6:              APFS Snapshot com.apple.os.update-... 22.7 GB    disk1s5s1
/dev/disk2 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +6.3 GB     disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:                  Apple_HFS Installer OS X Yosemite 5.9 GB     disk2s2
/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *62.1 GB    disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:                  Apple_HFS Sandisk 64Go            61.8 GB    disk3s2
                    (free space)                         135.2 MB   -
MacBook-Pro-de-Ced:~ cedric$
	sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointeraction
	Tu cherches, disons, très mal. Dans Google, si tu tapes obtenir el capitan apple le premier lien t'amène ici... https://support.apple.com/fr-fr/HT211683 ...en recherche, je pense que l'on ne peut pas faire plus simple.Je n'ai rien trouvé sur le site d'apple.
Effectivement mais c'est parce que j'avais déjà cherché à installer un OS supérieur au mien et c'était Yosémite (puisque ce macbook était sur Maverick). Je n'ai pour le coup pas trouvé cet OS mais j'étais tombé sur le forum de macg qui référence d'anciennes versions d'OS X et c'est là que j'ai pris El Capitan la première fois. De base il me paraissait logique que Yosemite soit moins gourmand que El Capitan mais visiblement ce n'est pas ainsi que ça marcheTu cherches, disons, très mal. Dans Google, si tu tapes obtenir el capitan apple le premier lien t'amène ici... https://support.apple.com/fr-fr/HT211683 ...en recherche, je pense que l'on ne peut pas faire plus simple.![]()
Bon et bien je ne sais pas ce que j'ai foutu et je m'excuse de ça :dead:
MacBook-Pro-de-Rouedou:~ cedric$ sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointeraction
Password:
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
IA app name cookie write failed
The copy of the installer app failed.
.MacBook-Pro-de-Rouedou:~ cedric$ sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointraction
Password:
/Vol*/San* is not a valid volume mount point.
MacBook-Pro-de-Rouedou:~ cedric$ sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointeraction
/Vol*/San* is not a valid volume mount point.
MacBook-Pro-de-Rouedou:~ cedric$ sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointeraction
/Vol*/San* is not a valid volume mount point.
MacBook-Pro-de-Rouedou:~ cedric$ diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *500.3 GB   disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk1         500.0 GB   disk0s2
/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +500.0 GB   disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Données  337.3 GB   disk1s1
   2:                APFS Volume Preboot                 298.8 MB   disk1s2
   3:                APFS Volume Recovery                655.4 MB   disk1s3
   4:                APFS Volume VM                      5.4 GB     disk1s4
   5:                APFS Volume Macintosh HD            22.7 GB    disk1s5
   6:              APFS Snapshot com.apple.os.update-... 22.7 GB    disk1s5s1
/dev/disk2 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +6.3 GB     disk2
   1:                        EFI EFI                     209.7 MB   disk2s1
   2:                  Apple_HFS Installer OS X Yosemite 5.9 GB     disk2s2
/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *62.1 GB    disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:                  Apple_HFS Install OS X Yosemite   61.8 GB    disk3s2
                    (free space)                         135.2 MB   -
MacBook-Pro-de-Rouedou:~ cedric$
	diskutil partitionDisk disk3 gpt jhfs+ CLE 53g jhfs+ "Sans titre" 0b ; diskutil list disk3
	Last login: Sun Dec 20 07:32:26 on ttys000
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.
MacBook-Pro-de-Rouedou:~ cedric$ diskutil partitionDisk disk3 gpt jhfs+ CLE 53g jhfs+ "Sans titre" 0b ; diskutil list disk3
Started partitioning on disk3
Unmounting disk
Creating the partition map
Waiting for partitions to activate
Formatting disk3s2 as Mac OS Extended (Journaled) with name CLE
Initialized /dev/rdisk3s2 as a 49 GB case-insensitive HFS Plus volume with a 8192k journal
Mounting disk
Formatting disk3s3 as Mac OS Extended (Journaled) with name Sans titre
Initialized /dev/rdisk3s3 as a 8 GB case-insensitive HFS Plus volume with a 8192k journal
Mounting disk
Finished partitioning on disk3
/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *62.1 GB    disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:                  Apple_HFS CLE                     52.9 GB    disk3s2
   3:                  Apple_HFS Sans titre              8.8 GB     disk3s3
MacBook-Pro-de-Rouedou:~ cedric$
	sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointeraction
	-bash-3.2# diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *251.0 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk3         250.8 GB   disk0s2
/dev/disk1 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +1.8 GB     disk1
   1:                 Apple_APFS Container disk2         1.8 GB     disk1s1
/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +1.8 GB     disk2
                                 Physical Store disk1s1
   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 -                      +250.8 GB   disk3
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Données  141.3 GB   disk3s1
   2:                APFS Volume Preboot                 91.2 MB    disk3s2
   3:                APFS Volume Recovery                1.1 GB     disk3s3
   4:                APFS Volume VM                      1.1 GB     disk3s4
   5:                APFS Volume Macintosh HD            32.8 KB    disk3s5
-bash-3.2#
	MacBook-Pro-de-Rouedou:~ cedric$ sudo /Ap*/Ins*\Yos*/C*/R*/createinstallmedia --volume /Vol*/San* --applicationpath /Ap*/Ins*\Yos* --nointeraction
Password:
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.
MacBook-Pro-de-Rouedou:~ cedric$
	-bash-3.2# sw_vers -productVersion
11.1
-bash-3.2# diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *251.0 GB   disk0
   1:                        EFI EFI                     209.7 MB   disk0s1
   2:                 Apple_APFS Container disk3         250.8 GB   disk0s2
/dev/disk1 (disk image):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        +1.8 GB     disk1
   1:                 Apple_APFS Container disk2         1.8 GB     disk1s1
/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +1.8 GB     disk2
                                 Physical Store disk1s1
   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 -                      +250.8 GB   disk3
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Données  144.8 GB   disk3s1
   2:                APFS Volume Preboot                 91.2 MB    disk3s2
   3:                APFS Volume Recovery                1.1 GB     disk3s3
   4:                APFS Volume VM                      1.1 GB     disk3s4
   5:                APFS Volume Macintosh HD            32.8 KB    disk3s5
-bash-3.2#