kirstenfromnsw
Level 1 (8 points)
Windows Software

Q: Macintosh HD Not Appearing After Installing Windows 8.1

Today I installed windows 8.1 onto my 11 inch mid 2013 MacBook Air using Bootcamp. It installed perfectly and I was easily able to switch between Macintosh HD and Windows by pressing Option + Power button. I downloaded the sims 3 and a few expansion packs onto the windows partition and soon realised that I hadn't split enough space for windows. I fixed this by downloading Minitool Partition Wizard. When I was splitting ore space into windows, I accidentally deleted one of the other partitions (I think that's what it was). It had around 600mb on it. Since deleting that, the Macintosh HD partition doesn't appear when I turn on my mac and press option + power button, only the windows partition is available. I went into Internet Recovery by pressing command + r. I then went into disk utility. The Macintosh HD partition was greyed out. I unlocked it, verified and repaired it and then restarted my Mac. Nothing changed. I repeated the command + r and then tried reinstalling Mavericks, but it said "This disk cannot be used to start your computer". There's nothing else I can do, can someone please tell me how to fix this?

iPod touch, iOS 6

Posted on Sep 21, 2016 5:36 AM

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kirstenfromnsw

Q: Macintosh HD Not Appearing After Installing Windows 8.1

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  • Helpful answers

  • by Loner T,

    Loner T Loner T Sep 21, 2016 5:49 AM in response to kirstenfromnsw
    Level 7 (24,182 points)
    Safari
    Sep 21, 2016 5:49 AM in response to kirstenfromnsw

    Minitool Partition tool should not be used on any Mac. It is one of the worst tools you can find. You have also deleted a 600MB partition, which is your OS X Recovery HD. Using this tool converted to a non-GPT disk.

     

    Can you boot into Internet Recovery - About OS X Recovery - Apple Support ?

  • by kirstenfromnsw,

    kirstenfromnsw kirstenfromnsw Sep 21, 2016 6:32 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Sep 21, 2016 6:32 AM in response to Loner T

    Yes, I'm in Internet recovery right now

  • by Loner T,

    Loner T Loner T Sep 21, 2016 7:10 AM in response to kirstenfromnsw
    Level 7 (24,182 points)
    Safari
    Sep 21, 2016 7:10 AM in response to kirstenfromnsw

    Click on Utilities -> Terminal and post the output of

     

    diskutil list

  • by kirstenfromnsw,

    kirstenfromnsw kirstenfromnsw Sep 21, 2016 7:43 AM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Sep 21, 2016 7:43 AM in response to Loner T

    Unfortunately my phone won't let me insert a photo and I obviously can't use my Mac so I'll just write down what comes up:

    /dev/disk0

    #:               TYPE NAME.                      SIZE.             IDENTIFIER

    #0:     GUID_partition_scheme.           *251.0 GB.     disk0

    #1:                        EFI EFI                     209.7 MB      disk0s1

    #2:          Apple_CoreStorage               186.8 GB      disk0s2

    #3:   Microsoft Basic Data BOOTCAMP 63.9 GB      disk0s3

    /dev/disk1

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:   Apple_partition_scheme       *1.3 GB            disk1

    #1:    Apple_partition_map               30.7 KB        disk1s1

    #2:    Apple_HFS OS X Base System 1.3GB        disk1s2

    /dev/disk2

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk2

    /dev/disk3

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk3

    /dev/disk4

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk4

    /dev/disk5

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk5

    /dev/disk6

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk6

    /dev/disk7

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *6.3 MB          disk7

    /dev/disk8

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *2.1 MB          disk8

    /dev/disk9

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *1.0 MB          disk9

    /dev/disk10

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk10

    /dev/disk11

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *524.3KB        disk11

    /dev/disk12

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:                       untitled                *1.0 MB          disk12

    /dev/disk13

    #:               TYPE NAME.                  SIZE.             IDENTIFIER

    #0:       Apple_HFS Macintosh HD    *186.5 GB       disk13

  • by Loner T,

    Loner T Loner T Sep 21, 2016 8:01 AM in response to kirstenfromnsw
    Level 7 (24,182 points)
    Safari
    Sep 21, 2016 8:01 AM in response to kirstenfromnsw

    In case you need to do this in the future, Copy the output of the Terminal using Command+C, quit Terminal, start Safari, and  then use Command+V to Paste the output in the discussion as reply.

     

    Please run How to Reset NVRAM on your Mac - Apple Support and then check the available options when you boot and hold Alt/Option key.

  • by kirstenfromnsw,

    kirstenfromnsw kirstenfromnsw Sep 21, 2016 10:29 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Sep 21, 2016 10:29 PM in response to Loner T

    I followed all the instructions, yet windows is still the only partition I can load. I tried it again, yet it remained the same. I'm really starting to worry because I have too much data on my macintosh hd for it to be gone.

  • by Loner T,

    Loner T Loner T Sep 22, 2016 5:07 AM in response to kirstenfromnsw
    Level 7 (24,182 points)
    Safari
    Sep 22, 2016 5:07 AM in response to kirstenfromnsw

    You do not show an entry for Recovery HD, as shown

     

    Unfortunately my phone won't let me insert a photo and I obviously can't use my Mac so I'll just write down what comes up:

    /dev/disk0

    #:               TYPE NAME.                      SIZE.             IDENTIFIER

    #0:     GUID_partition_scheme.           *251.0 GB.     disk0

    #1:                        EFI EFI                     209.7 MB      disk0s1

    #2:          Apple_CoreStorage               186.8 GB      disk0s2

    #3:   Microsoft Basic Data BOOTCAMP 63.9 GB      disk0s3

    You have a CoreStorage volume, yet a missing Recovery HD. Using the Copy/Paste method discussed, can you post the output of diskutil cs list command from Terminal in Internet Recovery.

  • by kirstenfromnsw,

    kirstenfromnsw kirstenfromnsw Sep 22, 2016 4:17 PM in response to Loner T
    Level 1 (8 points)
    Windows Software
    Sep 22, 2016 4:17 PM in response to Loner T

    Sorry, I reached my wits end and just ended up wiping my hard drive. It worked, my Mac is usable again. Thanks for your help though

  • by Loner T,

    Loner T Loner T Sep 22, 2016 5:04 PM in response to kirstenfromnsw
    Level 7 (24,182 points)
    Safari
    Sep 22, 2016 5:04 PM in response to kirstenfromnsw

    Please take good back ups of OS X, Windows and create a Windows System Restore point, once you have rebuilt your Mac fully.

  • by Loner T,

    Loner T Loner T Sep 22, 2016 5:04 PM in response to kirstenfromnsw
    Level 7 (24,182 points)
    Safari
    Sep 22, 2016 5:04 PM in response to kirstenfromnsw

    Please take good back ups of OS X, Windows and create a Windows System Restore point, once you have rebuilt your Mac fully.