Nicksiy

Q: OSx gone after installing Bootcamp!!

Hello. Recently I installed Bootcamp. Everything seemed to go well, until I noticed that after a while the Recovery HD partition disappeared. I have no clue what I did or what I messed with, but it's gone... Only after that OSx vanished, and now I'm stuck on Windows. I really, really, really need help!! I have important files on my OSx and I cannot afford losing them! Please help!!

 

Thank you...

MacBook Pro, OS X El Capitan (10.11.5)

Posted on Jul 13, 2016 3:15 PM

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Q: OSx gone after installing Bootcamp!!

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  • by Loner T,

    Loner T Loner T Jul 14, 2016 8:08 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 8:08 AM in response to Nicksiy

    Notice GPT3 in your previous post. This is your OSX Recovery HD. You may get a second Recovery HD, which will

    move partitions and can cause more issues.

     

    Nicksiy wrote:

     

    bash-3.2# gpt -vv -r show /dev/disk0

    gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

    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 976773167

          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  391458464      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      391868104    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      393137640  290404888      4  GPT part - 48465300-0000-11AA-AA11-00306543ECAC

      683542528     262144        

      683804672  292968448      5  GPT part - EBD0A0A2-B9E5-4433-87C0-68B6B72699C7

      976773120         15        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

    -bash-3.2#

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 8:15 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 8:15 AM in response to Loner T

    Ohh, I see. Should I remove OSx from that partition again?

  • by Loner T,

    Loner T Loner T Jul 14, 2016 8:21 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 8:21 AM in response to Nicksiy

    No. Let it finish the installation. We can try and work around it.

     

    Please post the GPT output after you finish installation.

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 10:01 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 10:01 AM in response to Loner T

    Here it is:

     

    gpt show: /dev/disk0: mediasize=500107862016; sectorsize=512; blocks=976773168

    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 976773167

          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  682125496      2  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      682535136    1269536      3  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      683804672  291698920      4  GPT part - 53746F72-6167-11AA-AA11-00306543ECAC

      975503592    1269536      5  GPT part - 426F6F74-0000-11AA-AA11-00306543ECAC

      976773128          7        

      976773135         32         Sec GPT table

      976773167          1         Sec GPT header

    Nicolais-MacBook-Pro:~ Adamant$

  • by Loner T,

    Loner T Loner T Jul 14, 2016 10:16 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 10:16 AM in response to Nicksiy

    You now have two Recovery HDs. Did you delete your BC/Windows partition using DU? Can you see your files in the original OSX installation?

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 10:21 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 10:21 AM in response to Loner T

    Yes, I removed Windows, there wasn't anything important on that. I can see my original OS X however, and see all files and apps. Nothing seems corrupt at all. I just can't access it. Although I wish to access it again as it has my working programs installed that I personally do not have the serial numbers for. I backed up my work files just in case however.

  • by Loner T,

    Loner T Loner T Jul 14, 2016 10:34 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 10:34 AM in response to Nicksiy

    Let us first rename the volumes and then we can test switching to the other partition.

     

    diskutil renameVolume disk0s2 "OSX-Macintosh-Old"

    diskutil renameVolume disk0s3 "Recovery-HD-Old"

    diskutil renameVolume disk0s4 "OSX-Macintosh-New"

    diskutil renameVolume disk0s5 "Recovery-HD-New"

     

    The help syntax is as follows

    diskutil renameVolume

    Usage:  diskutil rename[Volume] MountPoint|DiskIdentifier|DeviceNode newName

    The new name is subject to file system-specific naming restrictions.

    Ownership of the specified volume may be required.

    Once the volumes are renamed, try switching to the "old" using System Preferences -> Startup Disk.

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 10:41 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 10:41 AM in response to Loner T

    Huh.. It says "Volume must be mounted" when I attempt this

  • by Loner T,

    Loner T Loner T Jul 14, 2016 10:43 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 10:43 AM in response to Nicksiy

    Please post the output of each command.

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 10:50 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 10:50 AM in response to Loner T

    Nicolais-MBP:~ Adamant$ diskutil renameVolume disk0s2 "OSX-Macintosh-Old"

    Volume must be mounted

    Nicolais-MBP:~ Adamant$ diskutil renameVolume disk0s3 "Recovery-HD-Old"

    Volume must be mounted

    Nicolais-MBP:~ Adamant$ diskutil renameVolume disk0s4 "OSX-Macintosh-New"

    Volume must be mounted

    Nicolais-MBP:~ Adamant$ diskutil renameVolume disk0s5 "Recovery-HD-New"

  • by Loner T,

    Loner T Loner T Jul 14, 2016 10:54 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 10:54 AM in response to Nicksiy

    In Finder Preferences, check the Hard Disks box, and when the two Macintosh HDs show up rename them as necessary and appropriate.

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 11:00 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 11:00 AM in response to Loner T

    I renamed them appropriately as OSX-Macintosh-New and OSX-Macintosh-Old.

  • by Loner T,

    Loner T Loner T Jul 14, 2016 11:06 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 11:06 AM in response to Nicksiy

    Now try switching OSX to the "old" installation using System Preferences -> Startup Disk.

  • by Nicksiy,

    Nicksiy Nicksiy Jul 14, 2016 11:13 AM in response to Loner T
    Level 1 (4 points)
    Notebooks
    Jul 14, 2016 11:13 AM in response to Loner T

    It says "Building boot caches on boot helper partition failed.".

  • by Loner T,

    Loner T Loner T Jul 14, 2016 11:26 AM in response to Nicksiy
    Level 7 (24,202 points)
    Safari
    Jul 14, 2016 11:26 AM in response to Nicksiy

    On the Old Macintosh HD? If yes, on the old partition, look in /Library/Preferences/SystemConfiguration and look for a file called com.apple.Boot.plist. Please post it's contents.

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