Can't install Windows 10 on 2015 rMBP

Discussion in 'Windows, Linux & Others on the Mac' started by Cuniac, May 31, 2015.

  1. Cuniac macrumors 6502a

    Joined:
    Jan 23, 2013
    Location:
    Phoenix
    #1
    I'm trying to install the preview of 10 on my MBP and it says it can't install to my partition because it's not in Grid and thinks it's in Master boot. However, I did partition in grid and just checked. I did the format in the installer and it made it The correct format but it won't install and I keep seeing this error.
     
  2. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #2
    OS X formats FAT32 in such a way that OS X sees it as GPT but Windows sees it as MBR. This is known as hybrid MBR.

    In order to convert it to such a way that it appears as GPT to both OSes, you've to use a free CLI called gdisk to convert it from a hybrid MBR back to a protective MBR state.
     
  3. auhlixer macrumors regular

    Joined:
    Apr 15, 2006
    Location:
    Philadelphia, PA
    #3
    Is there any other way to do this? gdisk seems to be all terminal :(
     
  4. yjchua95 macrumors 604

    Joined:
    Apr 23, 2011
    Location:
    GVA, KUL, MEL (current), ZQN
    #4
    There is no GUI app for this. Only CLI (command line interface - meaning terminal) options exist.
     
  5. lowendlinux Contributor

    lowendlinux

    Joined:
    Sep 24, 2014
    Location:
    North Country (way upstate NY)
    #5
    gdisk is not terribly hard to use I partition just about everything with gdisk or fdisk it's logical and concise.
     

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