Boot camp impossible de partitioner Yosemite

Bonjour
J'essaye d'installer Windows 7 64 bit sur mon imac intel 27" avec Boot Camp 5.1.2 (497)
Et je reçois un message d'erreur
Le disque de démarrage ne peut être ni partions , ni restauré en une seule partition
Merci de votre aide

Bonjour Loner T
J'ai tout réinstaller sur mon imac comme à l'origine
iMac-de-Didier-Jadoul:~ Imac7$ diskutil list
/dev/disk0
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *3.0 TB     disk0
   1:                        EFI                         209.7 MB   disk0s1
   2:                  Apple_HFS Sans titre              3.0 TB     disk0s2
   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3
iMac-de-Didier-Jadoul:~ Imac7$ diskutil cs list
No CoreStorage logical volume groups found
iMac-de-Didier-Jadoul:~ Imac7$ sudo gpt -vv -r show /dev/disk0
WARNING: Improper use of the sudo command could lead to data loss
or the deletion of important system files. Please double-check your
typing when using sudo. Type "man sudo" for more information.
To proceed, enter your password, or type Ctrl-C to abort.
Password:
gpt show: /dev/disk0: mediasize=3000592982016; sectorsize=512; blocks=5860533168
gpt show: /dev/disk0: PMBR at sector 0
gpt show: /dev/disk0: Pri GPT at sector 1
gpt show: /dev/disk0: Sec GPT at sector 5860533167
       start        size  index  contents
           0           1         PMBR
           1           1         Pri GPT header
           2          32         Pri GPT table
          34           6        
          40      409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B
      409640  5858853952      2  GPT part - 48465300-0000-11AA-AA11-00306543ECAC
  5859263592     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC
  5860533128           7        
  5860533135          32         Sec GPT table
  5860533167           1         Sec GPT header
J'ai essayer boot camp et j'ai tjs le même message " Le disque de démarrage ne peut être ni partions , ni restauré "
Peux tu me dire l'étape suivante
Merci d'avance
Didier

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            Fully Secure:            No
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    ashtastic wrote:
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    4: 00    0   0   0 -    0   0   0 [         0 -          0] unused

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    d
    4
    n
    4
    782929920
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    0700
    p
    w
    y
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    Last sector (1454211072-1954210086, default = 1954210086) or {+-}size{KMGTP}: 1954209791
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    Disk identifier (GUID): 6ED0C429-00D1-4759-B50E-04B6FB80D0E3
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       2          409640      1452940543   692.6 GiB   AF00  Customer
       3      1452940544      1454210079   619.9 MiB   AB00  Recovery HD
       4      1454211072      1954209791   238.4 GiB   0700  Microsoft basic data
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    Disk /dev/disk0: 490234752 sectors, 233.8 GiB
    Logical sector size: 512 bytes
    Disk identifier (GUID): 59BDFEEB-1EB4-4529-94FE-3CBC2C3CD513
    Partition table holds up to 128 entries
    First usable sector is 34, last usable sector is 490234718
    Partitions will be aligned on 8-sector boundaries
    Total free space is 2604 sectors (1.3 MiB)
    Number  Start (sector)    End (sector)  Size       Code  Name
       1              40          409639   200.0 MiB   EF00  EF
       2          409640       401060383   191.0 GiB   AF05  Macintosh HD
       3       401060384       402329919   619.9 MiB   AB00  Re
       4       402331648       490233848   41.9 GiB    0700  Microsoft basic data
    Command (? for help): r
    Recovery/transformation command (? for help): h
    WARNING! Hybrid MBRs are flaky and dangerous! If you decide not to use one,
    just hit the Enter key at the below prompt and your MBR partition table will
    be untouched.
    Type from one to three GPT partition numbers, separated by spaces, to be
    added to the hybrid MBR, in sequence: 2 3 4
    Place EFI GPT (0xEE) partition first in MBR (good for GRUB)? (Y/N): y
    Creating entry for GPT partition #2 (MBR partition #2)
    Enter an MBR hex code (default AF): AF
    Set the bootable flag? (Y/N): n
    Creating entry for GPT partition #3 (MBR partition #3)
    Enter an MBR hex code (default AB): AB
    Set the bootable flag? (Y/N): n
    Creating entry for GPT partition #4 (MBR partition #4)
    Enter an MBR hex code (default 07): 07
    Set the bootable flag? (Y/N): y
    Recovery/transformation command (? for help): w
    Final checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTING
    PARTITIONS!!
    Do you want to proceed? (Y/N): y
    OK; writing new GUID partition table (GPT) to /dev/disk0.
    Warning: Devices opened with shared lock will not have their
    partition table automatically reloaded!
    Warning: The kernel may continue to use old or deleted partitions.
    You should reboot or remove the drive.
    The operation has completed successfully.
    6. a. Test 1 - Can you see your Bootcamp volume in Finder.
        b. Test 2 - Can you files in the Bootcamp volume?
        c. Test 3 - Can you see Bootcamp in your System Preferences -> Startup Disk.
        d. Test 4 - If Test 1-3 are successful, select Bootcamp and click on Restart. You may need Windows startup repair, if you see a hanging underline cursor at the top left corner of your screen. In most cases, it is not required.
    Here is an example...
    Command (? for help): d
    Partition number (1-4): 4
    Command (? for help): n
    Partition number (4-128, default 4): 4
    First sector (34-1954210086, default = 1454210080) or {+-}size{KMGTP}: 1454211072
    Last sector (1454211072-1954210086, default = 1954210086) or {+-}size{KMGTP}: 1954209791
    Current type is 'Apple HFS/HFS+'
    Hex code or GUID (L to show codes, Enter = AF00): 0700
    Changed type of partition to 'Microsoft basic data'
    Command (? for help): p
    Disk /dev/disk0: 1954210120 sectors, 931.8 GiB
    Logical sector size: 512 bytes
    Disk identifier (GUID): 6ED0C429-00D1-4759-B50E-04B6FB80D0E3
    Partition table holds up to 128 entries
    First usable sector is 34, last usable sector is 1954210086
    Partitions will be aligned on 8-sector boundaries
    Total free space is 1293 sectors (646.5 KiB)
    Number  Start (sector)    End (sector)  Size       Code  Name
       1              40          409639   200.0 MiB   EF00  EFI System Partition
       2          409640      1452940543   692.6 GiB   AF00  Customer
       3      1452940544      1454210079   619.9 MiB   AB00  Recovery HD
       4      1454211072      1954209791   238.4 GiB   0700  Microsoft basic data

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