10.13 High Sierra High Sierra - Disque de démarrage non bootable

[pantras46]

Bonjour, j'ai un iMac 27" de 2009 qui tournait sur High Sierra - J'ai voulu installer un patch pour installer Mojave et qui a échoué. Mon disque dur est éffacé. Je souhaite installer une sauvegarde à partir de Time Machine mais le disque dur n'apparaît pas.

Voici l'état de mon disque:

-bash-3.2# sudo nvram enable-legacy-orom-behavior=1

-bash: sudo: command not found

-bash-3.2# sudo firmwarepasswd -setmode command -allow-oroms

-bash: sudo: command not found

-bash-3.2# diskutil list

/dev/disk0 (internal, physical):

#: TYPE NAME SIZE IDENTIFIER

0: GUID_partition_scheme *1.0 TB disk0

1: EFI EFI 209.7 MB disk0s1

2: Apple_HFS Mac OS 978.6 GB disk0s2

3: Apple_Boot Recovery HD 650.0 MB disk0s3

4: Apple_Boot Recovery HD 650.0 MB disk0s4


/dev/disk1 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +5.2 MB disk1


/dev/disk2 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB 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 +2.1 MB 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 +12.6 MB disk8


/dev/disk9 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +4.2 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 +2.1 MB 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 +524.3 KB disk13


/dev/disk14 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +1.0 MB disk14


/dev/disk15 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +6.3 MB disk15


/dev/disk16 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +6.3 MB disk16


/dev/disk17 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +524.3 KB disk17


/dev/disk18 (disk image):

#: TYPE NAME SIZE IDENTIFIER

0: untitled +2.1 MB disk18


-bash-3.2#