Joe Falco
Level 1 (1 points)

Q: The boot disk can not be partitioned or restored to a single partition.

Hello, I bought a few days before the mac . I need to have windows to handle a scanner , so I tried Boot Camp . Unfortunately , I do not know how, but after several failed attempts , I found that Boot Camp does not work now and reports "The boot disk can not be partitioned or restored to a single partition . " I tried deleting the volumes added from windows , but it is likely that it has remained one for error ( EFI ). This is the current situation:

/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_CoreStorage Macintosh HD            959.4 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

   4:                        EFI NO NAME                 104.9 MB   disk0s4

/dev/disk1 (internal):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                         24.0 GB    disk1

   1:                        EFI EFI                     314.6 MB   disk1s1

   2:          Apple_CoreStorage Macintosh HD            23.6 GB    disk1s2

   3:                 Apple_Boot Boot OS X               134.2 MB   disk1s3

/dev/disk2 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS Macintosh HD           +982.0 GB   disk2

                                 Logical Volume on disk1s2, disk0s2

                                 79068DB8-F40B-4F92-A98D-20948AA81B80

                                 Unencrypted Fusion Drive

I suppose the problem is the volume /dev/disk0s4. So it is?
Can I delete it with a control terminal?


iMac (Retina 5K, 27-inch, Late 2015), OS X El Capitan (10.11.1), Windows10

Posted on Dec 7, 2015 1:05 PM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (23,898 points)
Safari
A:

Can you describe what steps they took to fix your issues? Did Apple support techs use terminal commands (diskutil cs) to rebuild your Fusion drive?

Posted on Dec 20, 2015 7:01 AM

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Joe Falco

Q: The boot disk can not be partitioned or restored to a single partition.

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  • by Loner T,Helpful

    Loner T Loner T Dec 11, 2015 1:17 PM in response to Joe Falco
    Level 7 (23,898 points)
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    Dec 11, 2015 1:17 PM in response to Joe Falco

    1. What is the 24GB internal disk?

    2. You may end up backing up OSX and erasing the internal drive in Internet Recovery and restoring from backup. The EFI 104.9 MB is a Windows EFI partition, which should not be there at all.

    3. Before you make the next attempt, please run the following two procedures with all external storage disconnected.

         Resetting the System Management Controller (SMC) on your Mac - Apple Support

         How to Reset NVRAM on your Mac - Apple Support

  • by Joe Falco,

    Joe Falco Joe Falco Dec 11, 2015 1:34 PM in response to Loner T
    Level 1 (1 points)
    Dec 11, 2015 1:34 PM in response to Loner T

    Hello, thank you for your help, but I've not solved my problem.

    Well, I made an attempt installing IOS, but now I am more partitions.

    Last login: Fri Dec 11 22:15:47 on ttys000

    iMac:~ JoeFalco$ diskutil list

    /dev/disk0 (internal):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                         24.0 GB    disk0

       1:                        EFI EFI                     314.6 MB   disk0s1

       2:          Apple_CoreStorage Macintosh HD            23.6 GB    disk0s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

    /dev/disk1 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *1.0 TB     disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:          Apple_CoreStorage Macintosh HD            959.4 GB   disk1s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

       4:                        EFI NO NAME                 104.9 MB   disk1s4

    /dev/disk2 (internal, virtual):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           +982.0 GB   disk2

                                     Logical Volume on disk0s2, disk1s2

                                     6D68E56B-E03A-400E-8AA7-CA6C12E52185

                                     Unencrypted Fusion Drive

    Honestly if I had a Windoiws I already solved and I am very sorry because I thought that Apple was higher, but I was wrong. I searched the internet for use with the commands diskutil, to erase and reformat EVERYTHING, but I find nothing exact. I tried to do the installation from USB stick, but DO NOT know what I need to delete and what not. Do not match the disks Disk Utility with those of diskutil. What a disappointment this iMac !!! And to think that I did NOT NOTHING other than the use of the Base Camp. it is clear that this program does NOT work at all well ... I wonder if anyone's really up to you really know how to format from scratch iMac !!!. Very, very disappointed, John

     

     

  • by Loner T,Helpful

    Loner T Loner T Dec 11, 2015 2:09 PM in response to Joe Falco
    Level 7 (23,898 points)
    Safari
    Dec 11, 2015 2:09 PM in response to Joe Falco

    Can you post the output of the following commands from OSX Terminal?

     

    sudo gpt -vv -r show /dev/disk0

    sudo gpt -vv -r show /dev/disk1

     

    Enter your password when prompted.

  • by Joe Falco,

    Joe Falco Joe Falco Dec 11, 2015 2:10 PM in response to Joe Falco
    Level 1 (1 points)
    Dec 11, 2015 2:10 PM in response to Joe Falco

    Last login: Fri Dec 11 22:49:11 on console

    iMac:~ JoeFalco$ sudo gpt -vv -r show /dev/disk0

    Password:

    gpt show: /dev/disk0: mediasize=1000204886016; sectorsize=512; blocks=1953525168

    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 1953525167

           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  1873730944      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      1874140584     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      1875410120      922424        

      1876332544      204800      4  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

      1876537344    76987791        

      1953525135          32         Sec GPT table

      1953525167           1         Sec GPT header

    iMac:~ JoeFalco$ sudo gpt -vv -r show /dev/disk1

    gpt show: /dev/disk1: mediasize=24002560000; sectorsize=4096; blocks=5860000

    gpt show: /dev/disk1: PMBR at sector 0

    gpt show: /dev/disk1: Pri GPT at sector 1

    gpt show: /dev/disk1: Sec GPT at sector 5859999

        start     size  index  contents

            0        1         PMBR

            1        1         Pri GPT header

            2        4         Pri GPT table

            6    76800      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

        76806  5750421      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      5827227    32768      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      5859995        4         Sec GPT table

      5859999        1         Sec GPT header

  • by Loner T,Apple recommended

    Loner T Loner T Dec 11, 2015 4:06 PM in response to Joe Falco
    Level 7 (23,898 points)
    Safari
    Dec 11, 2015 4:06 PM in response to Joe Falco

    My recommendation is

     

    1. Back up OSX using Time Machine - Use Time Machine to back up or restore your Mac - Apple Support . The disks you can use with TM are Backup disks you can use with Time Machine - Apple Support .

    2. Boot into Internet Recovery - OS X: About OS X Recovery - Apple Support (Command+Opt+R).

    3. Erase your internal disks. Use Utilities -> Disk Utility to erase your internal disks. If that does not work, we can manually rebuild the disks.

    4. Restore OSX using links in Step 1.

    5. Run SMC/NVRAM Reset without any other external storage attached.

    6. Run BC Assistant and install Windows.

  • by Joe Falco,

    Joe Falco Joe Falco Dec 16, 2015 10:02 PM in response to Loner T
    Level 1 (1 points)
    Dec 16, 2015 10:02 PM in response to Loner T

    Hello, I tried your procedure, but no, I am NOT able to "Erase your internal disks. Use Utilities -> Disk Utility to erase your internal disks. If That does not work, we can manually rebuild the disks." I think the only way, is to use the command "diskutil", but do not know the correct syntax and so can not proceed. Thanks, I'll open another post about using this tool.

  • by Loner T,

    Loner T Loner T Dec 17, 2015 2:11 AM in response to Joe Falco
    Level 7 (23,898 points)
    Safari
    Dec 17, 2015 2:11 AM in response to Joe Falco

    Please see can't install windows on my mac. help! as a reference (the diskutil cs commands parts) to delete and rebuild the CS LVG/LV.

  • by yoda75020,

    yoda75020 yoda75020 Dec 17, 2015 5:51 AM in response to Joe Falco
    Level 1 (0 points)
    Dec 17, 2015 5:51 AM in response to Joe Falco

    Hi,

    Same issue here.

    Have tried to instal windows and it didn't worked.

    Now i have this alert when launching BC :

     

    pic1.png

     

    Can't do anything now, please help.

     

    SonicStudio:~ SonicStudio$ diskutil list

    /dev/disk0 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *2.0 TB     disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage Macintosh HD            1.4 TB     disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:                        EFI NO NAME                 104.9 MB   disk0s4

       5:                  Apple_HFS SANS TITRE              16.8 MB    disk0s5

       6:                        EFI NO NAME                 104.9 MB   disk0s6

       7:                  Apple_HFS BOOTCAMP                543.5 GB   disk0s7

    /dev/disk1 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *121.3 GB   disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:          Apple_CoreStorage Macintosh HD            121.0 GB   disk1s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk1s3

    /dev/disk2 (internal, virtual):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           +1.6 TB     disk2

                                     Logical Volume on disk1s2, disk0s2

                                     BBEF1EE5-70F8-496B-ADCA-E81DDCEA2AD5

                                     Unencrypted Fusion Drive

    /dev/disk3 (external, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *3.0 TB     disk3

       1:                        EFI EFI                     209.7 MB   disk3s1

       2:                  Apple_HFS LaCie                   2.5 TB     disk3s2

       3:       Microsoft Basic Data LACIE SHARE             509.9 GB   disk3s3

  • by Loner T,

    Loner T Loner T Dec 17, 2015 6:01 AM in response to yoda75020
    Level 7 (23,898 points)
    Safari
    Dec 17, 2015 6:01 AM in response to yoda75020

    The following partitions will cause problems.

     

    4:                        EFI NO NAME                 104.9 MB   disk0s4

    5:                  Apple_HFS SANS TITRE              16.8 MB    disk0s5

    6:                        EFI NO NAME                 104.9 MB   disk0s6

    7:                  Apple_HFS BOOTCAMP                543.5 GB   disk0s7

    Since you have a Fusion drive, the backup/erase internal disk(s)/restore method is the recommended solution.

     

    Do not connect any external storage when installing Windows (except the Windows USB Installer created by BCA, if using a USB Installer).

  • by yoda75020,

    yoda75020 yoda75020 Dec 17, 2015 6:11 AM in response to Loner T
    Level 1 (0 points)
    Dec 17, 2015 6:11 AM in response to Loner T

    Thanks for your answer

    please can you tel me How to do ?

  • by Loner T,

    Loner T Loner T Dec 17, 2015 6:16 AM in response to yoda75020
    Level 7 (23,898 points)
    Safari
    Dec 17, 2015 6:16 AM in response to yoda75020

    Use the Time Machine method a couple of posts above this one. If you run into any CoreStorage issues, I can provide Terminal commands. There is also a link above for the Terminal commands to rebuild the CS/Fusion drive. If you need exact step by start an new discussion and we can discuss the steps.

  • by yoda75020,

    yoda75020 yoda75020 Dec 17, 2015 6:21 AM in response to Loner T
    Level 1 (0 points)
    Dec 17, 2015 6:21 AM in response to Loner T

    ok i will try the  TM method.

    Thanks a lot for your help and i will open a new discuss if it it won't work

     

     

  • by yoda75020,

    yoda75020 yoda75020 Dec 17, 2015 6:31 AM in response to yoda75020
    Level 1 (0 points)
    Dec 17, 2015 6:31 AM in response to yoda75020

    Sorry, i'm looking for your post with the TM backup/erase internal disk(s)/restore method

    Can you post the link to post ?

     

    Thx a lot

  • by Loner T,

    Loner T Loner T Dec 17, 2015 6:33 AM in response to yoda75020
    Level 7 (23,898 points)
    Safari
    Dec 17, 2015 6:33 AM in response to yoda75020

    Please see Re: The boot disk can not be partitioned or restored to a single partition. (otherwise I can copy/paste).

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