(en passant, je suis spectateur de la résolution de ce problème et fasciné de voir l'aisance de @macomaniac sur les commandes de terminal).:eek:
-bash-3.2# diskutil eraseDisk exfat CLE mbr disk1
Started erase on disk1
Unmounting disk
Creating the partition map
Waiting for the disks to reappear
Formatting disk1s1 as ExFAT with name CLE
Volume name : CLE
Partition offset : 2 sectors (1024 bytes)
Volume size : 31244286 sectors (15997074432 bytes)
Bytes per sector : 512
Bytes per cluster: 32768
FAT offset : 2048 sectors (1048576 bytes)
# FAT sectors : 4096
Number of FATs : 1
Cluster offset : 6144 sectors (3145728 bytes)
# Clusters : 488095
Volume Serial # : 5e8c2d3d
Bitmap start : 2
Bitmap file size : 61012
Upcase start : 4
Upcase file size : 5836
Root start : 5
Mounting disk
Finished erase on disk1
-bash-3.2#
diskutil eject disk1
-bash-3.2# diskutil eject disk1
Disk disk1 ejected
-bash-3.2#
diskutil list
-bash-3.2# diskutil list
/dev/disk0
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *500.1 GB disk0
1: EFI EFI 209.7 MB disk0s1
2: Apple_HFS Untitled 479.2 GB disk0s2
3: Apple_Boot Recovery HD 650.0 MB disk0s3
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *16.0 GB disk1
1: Windows_NTFS CLE 16.0 GB disk1s1
/dev/disk2
#: TYPE NAME SIZE IDENTIFIER
0: Apple_partition_scheme *1.3 GB disk2
1: Apple_partition_map 30.7 KB disk2s1
2: Apple_HFS OS X Base System 1.3 GB disk2s2
/dev/disk3
#: TYPE NAME SIZE IDENTIFIER
0: untitled *5.2 MB disk3
/dev/disk4
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk4
/dev/disk5
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk5
/dev/disk6
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk6
/dev/disk7
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk7
/dev/disk8
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk8
/dev/disk9
#: TYPE NAME SIZE IDENTIFIER
0: untitled *6.3 MB disk9
/dev/disk10
#: TYPE NAME SIZE IDENTIFIER
0: untitled *2.1 MB disk10
/dev/disk11
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk11
/dev/disk12
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk12
/dev/disk13
#: TYPE NAME SIZE IDENTIFIER
0: untitled *524.3 KB disk13
/dev/disk14
#: TYPE NAME SIZE IDENTIFIER
0: untitled *1.0 MB disk14
/dev/disk15
#: TYPE NAME SIZE IDENTIFIER
0: untitled *6.3 MB disk15
-bash-3.2#
/dev/disk1
#: TYPE NAME SIZE IDENTIFIER
0: FDisk_partition_scheme *16.0 GB disk1
1: Windows_NTFS CLE 16.0 GB disk1s1
ls /Vol*/CLE
-bash-3.2# ls /Vol*/CLE
.Trashes System Volume Information
._.Trashes YOSEMITE.dmg
-bash-3.2#
cp -av /Vol*/CLE/YOS* /Vol*/Untitled
-bash-3.2# cp -av /Vol*/CLE/YOS* /Vol*/Untitled
/Volumes/CLE/YOSEMITE.dmg -> /Volumes/Untitled/YOSEMITE.dmg
-bash-3.2#
hdiutil attach /Vol*/Unt*/YOS*
-bash-3.2# hdiutil attach /Vol*/Unt*/YOS*
/dev/disk16 GUID_partition_scheme
/dev/disk16s1 EFI
/dev/disk16s2 Apple_HFS /Volumes/Installer Yosemite
-bash-3.2#
diskutil eraseDisk jhfs+ CLE gpt disk1
-bash-3.2# diskutil eraseDisk jhfs+ CLE gpt disk1
Started erase on disk1
Unmounting disk
Creating the partition map
Waiting for the disks to reappear
Formatting disk1s2 as Mac OS Extended (Journaled) with name CLE
Initialized /dev/rdisk1s2 as a 15 GB case-insensitive HFS Plus volume with a 8192k journal
Mounting disk
Finished erase on disk1
-bash-3.2#
/Vol*/Install*/Install*/C*/R*/createinstallmedia --volume /Vol*/CLE --applicationpath /Vol*/Install*/Install* --nointeraction
-bash-3.2# /Vol*/Install*/Install*/C*/R*/createinstallmedia --volume /Vol*/CLE --applicationpath /Vol*/Install*/Install* --nointeraction
Erasing Disk: 0%... 10%... 20%... 30%...100%...
Copying installer files to disk...
Copy complete.
Making disk bootable...
Copying boot files...
Copy complete.
Done.
-bash-3.2#