supastring
Level 1 (2 points)

Q: iMac Retina - BootCamp - Windows 10 - Partition Problem

Hello.

 

This is my iMac:

 

iMac Retina 5K 27 Inch

Processor: 4Ghz Intel Core i7

Memory 8 GB 1600 Mhz DDR3
OSX Yosemite Version 10.10.5

As of writing, all updates installed from the App Store

 

This is my problem:

 

- Want to install Windows 10 via Bootcamp

- Downloaded the latest Windows 10 64Bit iso

- Used Bootcamp assistant to put the iso on a USB stick and create a new HD partition of 500GB called BOOTCAMP

- Bootcamp assistant restarts my Mac, I'm taken to Windows 10 setup, go through the various menus fine until I get to the partition selection menu

- Can't use the new BOOTCAMP partition, given the error message: 'Windows cannot be installed to Disk 0 Partition 4'

- So I click the Format option for that partition, and it is formatted

- I try to install on this formatted partition, and I now get the error message: 'We couldn't create a new partition or locate an existing one. For more information see the setup log files'.

 

Things I have tried to solve the problem:

 

- I made sure the USB stick with the Win 10 installer was the only external drive connected to my iMac. I have a mouse and 2nd monitor connected through USB, but I can't imagine they'd be a problem

- Tried to bypass Bootcamp assistant and manually install Windows 10 using Disk Utility and creating a partition formatted to Windows NT File System - but that ran into the same partition problems.

- Held the Option button on restart and booted up from EFI Boot - same problems occurred

 

Please Help!

iMac with Retina 5K display, OS X Yosemite (10.10.5)

Posted on Sep 14, 2015 8:40 AM

by Loner T,Solvedanswer
Loner T Loner T
Level 7 (24,098 points)
Safari
A:

Bootcamp partitioning failed miserably.

 

EFI boot requires MSR (System Reserved - FAT) and MSD (Data - NTFS). BCA did not choose this path.

Legacy BIOS boot requires, MBR and a partition within the first 2TB start point, otherwise it will fail.

 

BCA did not do it correctly. Can you remove the BC Partition using BCA only? Once it is removed,

 

1. Run Disk Utility Repair Disk.

2. Run the following two procedures.

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

     How to Reset NVRAM on your Mac - Apple Support

3. Run BCA and once the partitioning is complete see if it works. If it does not, please post the output of the same commands, and we can figure what manual intervention should be made to make BCA work correctly.

Posted on Sep 14, 2015 10:37 AM

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supastring

Q: iMac Retina - BootCamp - Windows 10 - Partition Problem

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  • by Loner T,

    Loner T Loner T Sep 14, 2015 8:49 AM in response to supastring
    Level 7 (24,098 points)
    Safari
    Sep 14, 2015 8:49 AM in response to supastring

    Do you have a Fusion drive on your iMac 5k ?

  • by supastring,

    supastring supastring Sep 14, 2015 8:53 AM in response to Loner T
    Level 1 (2 points)
    Sep 14, 2015 8:53 AM in response to Loner T

    Hi, yes, it's a Fusion Drive.

  • by Loner T,

    Loner T Loner T Sep 14, 2015 8:59 AM in response to supastring
    Level 7 (24,098 points)
    Safari
    Sep 14, 2015 8:59 AM in response to supastring

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

     

    diskutil list

    diskutil cs list

    sudo gpt -vv -r show /dev/disk0

    sudo fdisk /dev/disk0

     

    sudo gpt -vv -r show /dev/disk1

    sudo fdisk /dev/disk1

     

    The "sudo" commands will prompt for your password, and it will not be echoed back. You may also see a warning about improper use of "sudo" and potential data loss due to "abuse" of the command.

  • by supastring,

    supastring supastring Sep 14, 2015 9:07 AM in response to Loner T
    Level 1 (2 points)
    Sep 14, 2015 9:07 AM in response to Loner T

    Thank you, I ran the commands and this is the output that I got:

     

    diskutil list

     

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *121.3 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage                         121.0 GB   disk0s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk0s3

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *3.0 TB     disk1

       1:                        EFI EFI                     209.7 MB   disk1s1

       2:          Apple_CoreStorage                         2.4 TB     disk1s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk1s3

       4:       Microsoft Basic Data BOOTCAMP                599.9 GB   disk1s4

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           *2.5 TB     disk2

                                     Logical Volume on disk0s2, disk1s2

                                     F44BBF9A-74FE-49D6-A58A-E83211EBE44B

                                     Unencrypted Fusion Drive

    /dev/disk3

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     FDisk_partition_scheme                        *32.2 GB    disk3

       1:                 DOS_FAT_32 WININSTALL              32.2 GB    disk3s1



    diskutil cs list


    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group B815EC22-6DEB-4C85-9BCF-D27C7688F6C7

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

        Name:         Macintosh HD

        Status:       Online

        Size:         2520855863296 B (2.5 TB)

        Free Space:   507904 B (507.9 KB)

        |

        +-< Physical Volume 95D0200B-30FC-4464-AD98-FAA00F4D854D

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

        |   Index:    0

        |   Disk:     disk0s2

        |   Status:   Online

        |   Size:     120988852224 B (121.0 GB)

        |

        +-< Physical Volume 47B94ABE-D5ED-4C14-8E10-044E59083DD4

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

        |   Index:    1

        |   Disk:     disk1s2

        |   Status:   Online

        |   Size:     2399867011072 B (2.4 TB)

        |

        +-> Logical Volume Family 7823B683-452F-4CBD-818D-F9E13CAA0F2F

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

            Encryption Status:       Unlocked

            Encryption Type:         None

            Conversion Status:       NoConversion

            Conversion Direction:    -none-

            Has Encrypted Extents:   No

            Fully Secure:            No

            Passphrase Required:     No

            |

            +-> Logical Volume F44BBF9A-74FE-49D6-A58A-E83211EBE44B

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

                Disk:                  disk2

                Status:                Online

                Size (Total):          2515000098816 B (2.5 TB)

                Conversion Progress:   -none-

                Revertible:            No

                LV Name:               Macintosh HD

                Volume Name:           Macintosh HD

                Content Hint:          Apple_HFS



    sudo gpt -vv -r show /dev/disk0


    gpt show: /dev/disk0: mediasize=121332826112; sectorsize=512; blocks=236978176

    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 236978175

          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  236306352      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      236715992     262144      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      236978136          7        

      236978143         32         Sec GPT table

      236978175          1         Sec GPT header


    sudo fdisk /dev/disk0


    Disk: /dev/disk0 geometry: 14751/255/63 [236978176 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

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

    1: EE 1023 254  63 - 1023 254  63 [         1 -  236978175] <Unknown ID>

    2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

    3: 00    0   0   0 -    0   0   0 [         0 -          0] unused   

    4: 00    0   0   0 -    0   0   0 [         0 -          0] unused



    sudo gpt -vv -r show /dev/disk1


    gpt show: /dev/disk1: mediasize=3000592982016; sectorsize=512; blocks=5860533168

    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 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  4687240256      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      4687649896     1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      4688919432        1144        

      4688920576  1171611648      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      5860532224         911        

      5860533135          32         Sec GPT table

      5860533167           1         Sec GPT header



    sudo fdisk /dev/disk1


    Disk: /dev/disk1 geometry: 97451/255/63 [1565565872 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

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

    1: EE 1023 254  63 - 1023 254  63 [         1 - 4294967294] <Unknown ID>

    2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

    3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

    4: 00    0   0   0 -    0   0   0 [         0 -          0] unused 

  • by Loner T,Solvedanswer

    Loner T Loner T Sep 14, 2015 10:37 AM in response to supastring
    Level 7 (24,098 points)
    Safari
    Sep 14, 2015 10:37 AM in response to supastring

    Bootcamp partitioning failed miserably.

     

    EFI boot requires MSR (System Reserved - FAT) and MSD (Data - NTFS). BCA did not choose this path.

    Legacy BIOS boot requires, MBR and a partition within the first 2TB start point, otherwise it will fail.

     

    BCA did not do it correctly. Can you remove the BC Partition using BCA only? Once it is removed,

     

    1. Run Disk Utility Repair Disk.

    2. Run the following two procedures.

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

         How to Reset NVRAM on your Mac - Apple Support

    3. Run BCA and once the partitioning is complete see if it works. If it does not, please post the output of the same commands, and we can figure what manual intervention should be made to make BCA work correctly.

  • by supastring,

    supastring supastring Sep 14, 2015 9:24 AM in response to Loner T
    Level 1 (2 points)
    Sep 14, 2015 9:24 AM in response to Loner T

    Oof, Bootcamp dropped the ball. OK, I will give those things a go and post my results.

    Thanks.

  • by supastring,

    supastring supastring Sep 14, 2015 10:39 AM in response to Loner T
    Level 1 (2 points)
    Sep 14, 2015 10:39 AM in response to Loner T

    The steps you wrote worked! I'm writing this from Windows 10. I wouldn't have thought that pulling out the power cable and plugging it back in again would have helped in getting me here, but it did.
    I Reset SMC and NVRAM, ran BCA again, and had no problem with partitions after formatting through Windows setup.
    Thank you so much for your help!

  • by Loner T,Helpful

    Loner T Loner T Sep 15, 2015 6:33 AM in response to supastring
    Level 7 (24,098 points)
    Safari
    Sep 15, 2015 6:33 AM in response to supastring

    Please back up OSX and Windows to separate external disks, if possible.

  • by supastring,

    supastring supastring Sep 15, 2015 6:33 AM in response to Loner T
    Level 1 (2 points)
    Sep 15, 2015 6:33 AM in response to Loner T

    I will do that.

  • by WGrose,

    WGrose WGrose Sep 20, 2015 4:57 PM in response to Loner T
    Level 1 (5 points)
    Sep 20, 2015 4:57 PM in response to Loner T

    Loner T, thank you. I've been struggling all weekend to get Windows 10 installed on my 5K iMac, and it was as simple as an SMC reset/NVRAM reset that solved it. Same issue as the first post in this thread, - now solved. Thank you!

  • by Naeem,

    Naeem Naeem Sep 21, 2015 1:15 PM in response to Loner T
    Level 1 (0 points)
    Sep 21, 2015 1:15 PM in response to Loner T

    Hi,

     

    I have exactly the same issue as above, but your remediation steps didn't work for me. The error I get from the Windows 10 installation is (from X:\Windows\panther\ log):

     

    IBSLIB CanBeSystemVolume: Volume at disk [0] offset [0x676c200000] doesn't meet criteria for system volumes...

    ISBLIB DiskRegionSupportCapability:Region on disk [0] (offset [0x676c200000]) is BLOCKED against capability [CanBeSystemVolume] for the following reasons...

    ISBLIB LogReasons: [BLOCKING reason for {disk 0 offset 0x676c200000}: CanBeSystemVolume] The selected disk space is not of type ESP.

     

    I've followed the instructions as per the original poster 4-5 times with no luck. Any help from the experts here would be much appreciated.

     

    My setup (with the BOOTCAMP partition created) is:

     

    disk3, disk4 & disk5 are a software raid array of 2 USB3 disks.

     

    diskutil list

     

    /dev/disk0

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *500.3 GB   disk0

       1:                        EFI EFI                     209.7 MB   disk0s1

       2:          Apple_CoreStorage                         443.3 GB   disk0s2

       3:                 Apple_Boot Recovery HD             650.0 MB   disk0s3

       4:       Microsoft Basic Data                         56.1 GB    disk0s4

    /dev/disk1

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS Macintosh HD           *443.0 GB   disk1

                                     Logical Volume on disk0s2

                                     944BCAF6-62DE-42A3-BE0D-6B330E4A0D22

                                     Unencrypted

    /dev/disk2

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:     FDisk_partition_scheme                        *31.4 GB    disk2

       1:                 DOS_FAT_32 WININSTALL              31.4 GB    disk2s1

    /dev/disk3

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *3.0 TB     disk3

       1:                        EFI EFI                     314.6 MB   disk3s1

       2:                 Apple_RAID                         3.0 TB     disk3s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk3s3

    /dev/disk4

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:      GUID_partition_scheme                        *3.0 TB     disk4

       1:                        EFI EFI                     314.6 MB   disk4s1

       2:                 Apple_RAID                         3.0 TB     disk4s2

       3:                 Apple_Boot Boot OS X               134.2 MB   disk4s3

    /dev/disk5

       #:                       TYPE NAME                    SIZE       IDENTIFIER

       0:                  Apple_HFS My Book                *3.0 TB     disk5

     

    diskutil cs list

     

    CoreStorage logical volume groups (1 found)

    |

    +-- Logical Volume Group ED71E5DF-1FFE-44E6-9D94-7E56E194CD83

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

        Name:         Macintosh HD

        Status:       Online

        Size:         443335540736 B (443.3 GB)

        Free Space:   0 B (0 B)

        |

        +-< Physical Volume AE49F86B-7F9D-4E15-9C06-125915143010

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

        |   Index:    0

        |   Disk:     disk0s2

        |   Status:   Online

        |   Size:     443335540736 B (443.3 GB)

        |

        +-> Logical Volume Family CEC7DA91-80F7-4509-BD3C-5BD8000C9767

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

            Encryption Status:       Unlocked

            Encryption Type:         None

            Conversion Status:       NoConversion

            Conversion Direction:    -none-

            Has Encrypted Extents:   No

            Fully Secure:            No

            Passphrase Required:     No

            |

            +-> Logical Volume 944BCAF6-62DE-42A3-BE0D-6B330E4A0D22

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

                Disk:                  disk1

                Status:                Online

                Size (Total):          442999996416 B (443.0 GB)

                Conversion Progress:   -none-

                Revertible:            Yes (no decryption required)

                LV Name:               Macintosh HD

                Volume Name:           Macintosh HD

                Content Hint:          Apple_HFS

     

    sudo gpt -vv -r show /dev/disk0

     

    gpt show: /dev/disk0: mediasize=500277790720; sectorsize=512; blocks=977105060

    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 977105059

          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  865889728      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      866299368    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      867568904        760        

      867569664  109535232      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      977104896        131        

      977105027         32         Sec GPT table

      977105059          1         Sec GPT header

     

    sudo fdisk /dev/disk0

     

    Disk: /dev/disk0 geometry: 60821/255/63 [977105060 sectors]

    Signature: 0xAA55

             Starting       Ending

    #: id  cyl  hd sec -  cyl  hd sec [     start -       size]

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

    1: EE 1023 254  63 - 1023 254  63 [         1 -  977105059] <Unknown ID>

    2: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

    3: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

    4: 00    0   0   0 -    0   0   0 [         0 -          0] unused     

     

    sudo gpt -vv -r show /dev/disk1

     

    gpt show: unable to open device '/dev/disk1': Resource busy

     

    sudo fdisk /dev/disk1

     

    fdisk: /dev/disk1: Resource busy

  • by Loner T,

    Loner T Loner T Sep 21, 2015 2:11 PM in response to Naeem
    Level 7 (24,098 points)
    Safari
    Sep 21, 2015 2:11 PM in response to Naeem

    Naeem wrote:

     

    I have exactly the same issue as above

    , but your remediation steps didn't work for me. The error I get from the Windows 10 installation is (from X:\Windows\panther\ log):

    No. You have a different issue. Please see Boot Camp doesn't support RAID configurations - Apple Support .

     

    Eject disk3/4 RAID, disk5 MyBook. You need to use only the internal disk0 and the USB Installer for the entire duration of the Windows installation. What year/model is your Mac?

  • by Naeem,

    Naeem Naeem Sep 21, 2015 2:31 PM in response to Loner T
    Level 1 (0 points)
    Sep 21, 2015 2:31 PM in response to Loner T

    Ah, will try again with the external drives disconnected.

     

    iMac (Retina 5K, 27-inch, Late 2014)

    Processor 4Ghz Intel Core i7

    Memory 24GB 1600 MHz DDR3

    Startup Disk Macintosh HD

    Graphics AMD Radeon R9 M295X 4096 MB

  • by Naeem,

    Naeem Naeem Sep 22, 2015 11:26 AM in response to Loner T
    Level 1 (0 points)
    Sep 22, 2015 11:26 AM in response to Loner T

    This sorted my problem, many thanks.

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