Joe Falco

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

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

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  • by yoda75020,

    yoda75020 yoda75020 Dec 17, 2015 7:43 AM in response to Loner T
    Level 1 (0 points)
    Dec 17, 2015 7:43 AM in response to Loner T

    Ok so, i tried to erase fusion drive but it was not possible under recovery dis utilities (grey option)

    OSX was installed correctly via TM but i cannot launch BC anymore. Same issue....

     

  • by Loner T,

    Loner T Loner T Dec 17, 2015 7:51 AM in response to yoda75020
    Level 7 (24,307 points)
    Safari
    Dec 17, 2015 7:51 AM in response to yoda75020

    Start a new discussion and post the output of the commands.

  • by Joe Falco,

    Joe Falco Joe Falco Dec 19, 2015 11:29 PM in response to Loner T
    Level 1 (1 points)
    Dec 19, 2015 11:29 PM in response to Loner T

    I solved it by calling Apple.

  • by Loner T,Solvedanswer

    Loner T Loner T Dec 20, 2015 7:01 AM in response to Joe Falco
    Level 7 (24,307 points)
    Safari
    Dec 20, 2015 7:01 AM in response to Joe Falco

    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?

  • by Joe Falco,

    Joe Falco Joe Falco Dec 20, 2015 11:59 AM in response to Loner T
    Level 1 (1 points)
    Dec 20, 2015 11:59 AM in response to Loner T

    Hi, I deleted the Logical Volume Group and I rebuilt it, then I reinstalled IOS.

    Now the setting is:

    /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 myLogicalVolGroup       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 myLogicalVolGroup       999.3 GB   disk1s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

    /dev/disk2 (internal, virtual):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           +1.0 TB     disk2

                                     Logical Volume on disk1s2, disk0s2

                                     AFAC80D8-7897-401D-A8AD-85E69DF76BED

                                     Unencrypted Fusion Drive

  • by Joe Falco,

    Joe Falco Joe Falco Dec 20, 2015 12:07 PM in response to Loner T
    Level 1 (1 points)
    Dec 20, 2015 12:07 PM in response to Loner T

    Yes, Apple support techs have used the diskutil cs command, delete and coreStorage createVolume AAAAAAAA-BBBB-CCCC-DDDD-EEEEEEEEEEEE jhfs+ "Macintosh HD" 100%

  • by Loner T,

    Loner T Loner T Dec 20, 2015 12:23 PM in response to Joe Falco
    Level 7 (24,307 points)
    Safari
    Dec 20, 2015 12:23 PM in response to Joe Falco

    Can you post the output of diskutil cs list? There seems to be an issue when it was built, but the output will confirm if there an issue or not. The 24Gb disk (SSD)  should be the at index 0 in CS volume, not index 1. If the order of disks is as shown here, that is a problem.

    /dev/disk2 (internal, virtual):

      #:                      TYPE NAME                    SIZE      IDENTIFIER

      0:                  Apple_HFS Macintosh HD          +1.0 TB    disk2

                                    Logical Volume on disk1s2, disk0s2

                                    AFAC80D8-7897-401D-A8AD-85E69DF76BED

                                    Unencrypted Fusion Drive

  • by Joe Falco,

    Joe Falco Joe Falco Dec 20, 2015 12:36 PM in response to Loner T
    Level 1 (1 points)
    Dec 20, 2015 12:36 PM in response to Loner T

    iMac:~ JoeFalco$ diskutil cs list

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group E7E49732-1076-47DB-ABC8-EF7EEA0978D0

        =========================================================

        Name:         myLogicalVolGroup

        Status:       Online

        Size:         1022898851840 B (1.0 TB)

        Free Space:   45056 B (45.1 KB)

        |

        +-< Physical Volume EF73466E-B149-4169-84EE-1BE1B9D9A9A3

        |   ----------------------------------------------------

        |   Index:    0

        |   Disk:     disk1s2

        |   Status:   Online

        |   Size:     999345127424 B (999.3 GB)

        |

        +-< Physical Volume CDDDBD3F-62FC-45E5-B70C-1291B6AFCDEA

        |   ----------------------------------------------------

        |   Index:    1

        |   Disk:     disk0s2

        |   Status:   Online

        |   Size:     23553724416 B (23.6 GB)

        |

        +-> Logical Volume Family 3EC47C5B-8A19-4669-98BA-5D9BD4F5EA6B

            ----------------------------------------------------------

            Encryption Type:         None

            |

            +-> Logical Volume AFAC80D8-7897-401D-A8AD-85E69DF76BED

                ---------------------------------------------------

                Disk:                  disk2

                Status:                Online

                Size (Total):          1021994074112 B (1.0 TB)

                Revertible:            No

                LV Name:               Macintosh HD

                Volume Name:           Macintosh HD

                Content Hint:          Apple_HFS

                LVG Type:              Fusion, Sparse

  • by Loner T,

    Loner T Loner T Dec 20, 2015 12:49 PM in response to Joe Falco
    Level 7 (24,307 points)
    Safari
    Dec 20, 2015 12:49 PM in response to Joe Falco

    You may run into performance issues with the HDD being at index 0. If you have Time Machine configured and create a new backup, the ordering can be changed by rebuilding the CS and ordering the disks correctly. Also, the 24GB disk is actually larger, but the 4K block size used is causing the calculations of disk space to be incorrect. The 4K blocks are new on these Macs.

     

    Let me know if you want to rebuild the CS LVG/LV and I can provide commands to be used after your Mac is booted in Internet Recovery (Command+Opt+R).

  • by Joe Falco,

    Joe Falco Joe Falco Dec 20, 2015 1:11 PM in response to Loner T
    Level 1 (1 points)
    Dec 20, 2015 1:11 PM in response to Loner T

    Sorry, but I don't understand. What kind of problem can I have, with that configuration?

  • by Loner T,

    Loner T Loner T Dec 20, 2015 1:46 PM in response to Joe Falco
    Level 7 (24,307 points)
    Safari
    Dec 20, 2015 1:46 PM in response to Joe Falco

    Under normal configuration, the SSD part at index 0 will move blocks to disks at index 1..n when disk blocks are not needed, but if the ordering is different, your slower device is doing more work.

     

    Please see https://jolly.jinx.de/teclog/2012.10.20.fusion-drive-on-older-macs-yes.html and https://jolly.jinx.de/teclog/2012.10.31.01-more-on-byo-fusion-drive.html as a reference.

  • by Joe Falco,

    Joe Falco Joe Falco Dec 21, 2015 9:18 AM in response to Loner T
    Level 1 (1 points)
    Dec 21, 2015 9:18 AM in response to Loner T

    I understood little. I would not be in trouble and I would re-contact Apple for a change is not required from them. Sorry, but I'm a chicken for these things...

  • by Loner T,

    Loner T Loner T Dec 21, 2015 9:50 AM in response to Joe Falco
    Level 7 (24,307 points)
    Safari
    Dec 21, 2015 9:50 AM in response to Joe Falco

    No worries. You can call Apple Tech Support and state/ask them about the index at which the SSD should be located in a Fusion configuration. They should understand and ask you for the diskutil cs list or log into your Mac and try to address it. Please ensure you have good backups.

  • by lazzychicken,

    lazzychicken lazzychicken Feb 8, 2016 9:01 PM in response to Joe Falco
    Level 1 (1 points)
    Feb 8, 2016 9:01 PM in response to Joe Falco

    Apple community says I can't update or post questions but i can comment weird... but here is a question similar to the question that started this discussion please help or tell me how to post a question!

     

    On my MacBook pro I wanted to clean some stuff out and start a new so I created a new partition and put everything on that and erased the old partition and not I can't merge the old partition the subtract button is greyed out they are right next to each other on the disk but the space is the 2nd disk and Chicken my HD is the 4th is there a way that I can merge space into chicken or what would i have to do I've tried doing it in recovery mode that also didn't work the 3rd disk used to be the recovery partition but I thought if I deleted that and got that out of the way it might work but it didn't please help thx.

     

    /dev/disk0 (internal, physical):

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *751.3 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:                  Apple_HFS SPACE                   373.0 GB   disk0s2

       3:                  Apple_HFS Chicken                 377.8 GB   disk0s4

    Jonathans-MacBook-Pro:~ jonathansegal$

    Screen Shot 2016-02-08 at 10.50.26 PM.png

  • by Loner T,

    Loner T Loner T Feb 9, 2016 2:33 PM in response to lazzychicken
    Level 7 (24,307 points)
    Safari
    Feb 9, 2016 2:33 PM in response to lazzychicken

    Please start a new discussion - Find answers and ask new questions or

     

    Start-ASC-Discussion.png

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