tomnguyen93

Q: Bootcamp not showing OSX drive

Hi guys,

 

I have a 2012 Macbook pro Retina and I recently installed bootcamp with windows 8 on it. However, I have encountered a problem that my OSX drive is not showing up. I believe it is because I am on El Capitan and the storage is CoreStorage. When I typed diskutil cs list, it is not revertible. I wonder if you guys could help me with this!

 

diskutil list

/dev/disk0 (internal, physical):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:      GUID_partition_scheme                        *251.0 GB   disk0

   1:                        EFI EFI                     209.7 MB   disk0s1

   2:          Apple_CoreStorage MacOSX                  205.1 GB   disk0s2

   3:                 Apple_Boot Recovery HD             650.1 MB   disk0s3

   4:       Microsoft Basic Data BOOTCAMP                45.0 GB    disk0s4

/dev/disk1 (internal, virtual):

   #:                       TYPE NAME                    SIZE       IDENTIFIER

   0:                  Apple_HFS MacOSX                 +204.8 GB   disk1

                                 Logical Volume on disk0s2

                                 F70488A2-FFAA-4C11-95F2-8CE38982A164

                                 Unencrypted

 

diskutil cs list

+-- Logical Volume Group 883FF08F-93B1-4B14-AF7E-B749FED93A2F

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

    Name:         MacOSX

    Status:       Online

    Size:         205140320256 B (205.1 GB)

    Free Space:   839680 B (839.7 KB)

    |

    +-< Physical Volume 44E14BE2-8D47-499E-9E63-C02055960C34

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

    |   Index:    0

    |   Disk:     disk0s2

    |   Status:   Online

    |   Size:     205140320256 B (205.1 GB)

    |

    +-> Logical Volume Family A527800A-06C7-4560-8F5A-5A2CF879486C

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

        Encryption Type:         None

        |

        +-> Logical Volume F70488A2-FFAA-4C11-95F2-8CE38982A164

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

            Disk:                  disk1

            Status:                Online

            Size (Total):          204787154944 B (204.8 GB)

            Revertible:            No

            LV Name:               MacOSX

            Volume Name:           MacOSX

            Content Hint:          Apple_HFS

sudo gpt -vv -r show /dev/disk0

gpt show: /dev/disk0: mediasize=251000193024; sectorsize=512; blocks=490234752

gpt show: /dev/disk0: Suspicious MBR at sector 0

gpt show: /dev/disk0: Pri GPT at sector 1

gpt show: /dev/disk0: Sec GPT at sector 490234751

      start       size  index  contents

          0          1         MBR

          1          1         Pri GPT header

          2         32         Pri GPT table

         34          6        

         40     409600      1  GPT part - C12A7328-F81F-11D2-BA4B-00A0C93EC93B

     409640  400664688      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

  401074328    1269760      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

  402344088       1896        

  402345984   87887872      4  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

  490233856        863        

  490234719         32         Sec GPT table

  490234751          1         Sec GPT header

MacBook Pro with Retina display, Mac OS X (10.1.x)

Posted on Nov 28, 2015 7:13 AM

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Q: Bootcamp not showing OSX drive

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  • Helpful answers

  • by Loner T,

    Loner T Loner T Nov 28, 2015 8:31 AM in response to tomnguyen93
    Level 7 (23,613 points)
    Safari
    Nov 28, 2015 8:31 AM in response to tomnguyen93

    You will have to erase and re-install OS X after you manually create the partition as a JHFS+ partition. Be aware that this can cause problems with Windows. El Capitan will by default use CS. I have upgraded my MBP across various versions, which has left it as revertible. How was El Capitan installed on this Mac?

     

    The native Apple HFS+ driver for Windows allows read-only access to HFS+ volumes.

  • by tomnguyen93,

    tomnguyen93 tomnguyen93 Nov 28, 2015 8:31 AM in response to Loner T
    Level 1 (0 points)
    Nov 28, 2015 8:31 AM in response to Loner T

    Thank you for your reply. How would I create the partition as JHFS+? I am not exactly tech savvy! Should I downgrade OSX to a lower version then ?

  • by Loner T,

    Loner T Loner T Nov 28, 2015 9:44 AM in response to tomnguyen93
    Level 7 (23,613 points)
    Safari
    Nov 28, 2015 9:44 AM in response to tomnguyen93

    A. Create an separate bootable OS X installation - How to install OS X on an external drive connected to your Mac - Apple Support .

     

    You can do this using Internet Recovery


         Boot into Internet Recovery (Command+Opt+R) - OS X: About OS X Recovery - Apple Support. This will provide the OS X version that shipped with your Mac as documented in OS X versions and builds included with Mac computers - Apple Support .

     

    or using Local Recovery...

     

         Boot into Local Recovery (Command+R) and re-install OS X to separate disk.

     

    B. Boot from this external disk.

    C. Backup OSX to an external disk (Time Machine or any tool of your choice).

    D. Erase only the OS X Partition, not the whole disk.

    E. Your internal OS X partition should be on disk0s2.

    F. You will need to create the Logical Volume Group with the following command in OS X Terminal. The UUID generated is used in the next step.

         diskutil cs create "OSX-MacintoshLVG" disk0s2

    G. Now create a Logical Volume with the following command

         diskutil cs createVolume LongStringFromStepF jhfs+ "Macintosh HD" 100%

    H. Verify that diskutil cs list shows the volume as revertible.

    I. Re-install a fresh copy of OS X and verify again.

    J. Restore your files.

    K. You can now revert to JHFS+ using

         diskutil cs revert LongStringFromStepF

     

    Here is the syntax for the commands.

     

    diskutil cs create

    Usage:  diskutil coreStorage create lvgName

            MountPoint|DiskIdentifier|DeviceNode ...

    Create a CoreStorage logical volume group from one or more disks.

    The specified disks will become the initial set of PVs.

    All existing data on the drive will be lost.

    Ownership of the affected disks is required.

    Example: diskutil coreStorage create MyLVG disk1

     

    diskutil cs createVolume

    Usage:  diskutil coreStorage createVolume lvgUUID|lvgName type name size

            [-stdinpassphrase | -passphrase [passphrase]]

    Add a new logical volume to a CoreStorage logical volume group.

     

    Type is the file system to initialize on the new logical volume. Valid types

    are Journaled HFS+ or Case-sensitive Journaled HFS+ or their aliases.

     

    Size is the amount of space to allocate from the parent logical volume group.

    Valid sizes are floating-point numbers with a suffix of B(ytes), S(512-byte-

    blocks), K(ilobytes), M(egabytes), G(igabytes), T(erabytes), P(etabytes),

    or (%) a percentage of the current size of the logical volume group.

     

    Example: diskutil coreStorage createVolume

             11111111-2222-3333-4444-555555555555 jhfs+ myLV 10g

     

    diskutil cs revert

    Usage:  diskutil coreStorage revert

            MountPoint|DiskIdentifier|DeviceNode|lvUUID

            [-stdinpassphrase | -passphrase [passphrase] | -recoverykeychain file]

    Convert a CoreStorage logical volume back to its native type.

    If you are attempting to revert a disk on which conversion was started but

    which could not be unmounted, you must eject the disk or reboot first.

    The file system must be mounted and resizable (i.e. Journaled HFS+).

    Ownership of the affected disk and a passphrase (if encrypted) is required.