Oui, j'ai une clé. Celle quenous avions utilisée cet été. Il y a toujours l'OS d'ailleurs je pense, je n'y avais plus touché.
diskutil list
-bash-3.2# 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_HFS Macintosh HD 249.2 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
/dev/disk1 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme +2.1 GB disk1
1: Apple_HFS OS X Base System 2.0 GB disk1s1
/dev/disk2 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +5.2 MB disk2
/dev/disk3 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk3
/dev/disk4 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk4
/dev/disk5 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk5
/dev/disk6 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk6
/dev/disk7 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk7
/dev/disk8 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk8
/dev/disk9 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +2.1 MB disk9
/dev/disk10 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk10
/dev/disk11 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk11
/dev/disk12 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +524.3 KB disk12
/dev/disk13 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +1.0 MB disk13
/dev/disk14 (disk image):
#: TYPE NAME SIZE IDENTIFIER
0: untitled +6.3 MB disk14
/dev/disk15 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *15.5 GB disk15
1: EFI EFI 209.7 MB disk15s1
2: Apple_HFS Install OS X El Capitan 15.2 GB disk15s2
-bash-3.2#
2: Apple_HFS Install OS X El Capitan 15.2 GB disk15s2
bless --info /Volumes/Install*
-bash-3.2# bless --info /Volumes/Install*
finderinfo[0]: 638 => Blessed System Folder is /Volumes/Install OS X El Capitan/System/Library/CoreServices
finderinfo[1]: 649 => Blessed System File is /Volumes/Install OS X El Capitan/System/Library/CoreServices/boot.efi
finderinfo[2]: 0 => Open-folder linked list empty
finderinfo[3]: 0 => No alternate OS blessed file/folder
finderinfo[4]: 0 => Unused field unset
finderinfo[5]: 638 => OS X blessed folder is /Volumes/Install OS X El Capitan/System/Library/CoreServices
64-bit VSDB volume id: 0x085BD5A2D358F34E
-bash-3.2#
bless --folder /Volumes/Install*/System/Library/CoreServices --file /Volumes/Install*/System/Library/CoreServices/boot.efi --label "Installer Capitan"
-bash-3.2# bless --folder /Volumes/Install*/System/Library/CoreServices --file /Volumes/Install*/System/Library/CoreServices/boot.efi --label "Installer Capitan"
-bash-3.2#