GPT or MBR for 2nd drive? (bootcamp on 1st drive)

Discussion in 'MacBook Pro' started by sneak3, May 14, 2014.

  1. sneak3, May 14, 2014
    Last edited: May 14, 2014

    sneak3 macrumors 6502

    Joined:
    Oct 14, 2011
    #1
    Hi gents!

    1st SSD is for OSs, both OSX and Windows 7.
    2nd SSD will be shared between the 2 OSs, formatted in NTFS, for data/storage only.

    So 2 questions:

    1- Should I format the 2nd SSD within OS X with TUXERA built-in NTFS tool or in Windows 7?

    2- Should I use MBR or GPT on it?

    Cheers!
     
  2. sneak3 thread starter macrumors 6502

    Joined:
    Oct 14, 2011
    #2
    220 views! I can't believe everybody here is clueless about this issue. I thought it was common knowledge for tech people :(
     
  3. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #3
    1. Doesn't matter. Same end result is a NTFS formatted drive.

    2. GPT.
     
  4. sneak3 thread starter macrumors 6502

    Joined:
    Oct 14, 2011
    #4
    Alright, I'll do it in Windows 7 just in case.

    And why exactly GPT? I thought Win 7 "liked" MBR more and OS X was capable of reading MBR as well.
     
  5. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #5
    GPT stands for GUID Partition Table. Pretty good overview on wiki here.

    Windows did use MBR on older BIOS motherboards. But GUID allows larger drive sizes and works with newer EFI (replaced BIOS) motherboards. This varies by Windows version. If you look toward the bottom of that wiki page it shows what is supported by different OS versions.

    Ordinarily, it only comes into play on a boot drive. If you are not booting from the drive and are just using it for external storage it does not come into play much.
     
  6. sneak3 thread starter macrumors 6502

    Joined:
    Oct 14, 2011
    #6
    If I use the built-in windows 7 disk management for formatting, can I still choose GPT or for GPT it has to be done on the OS X side?
     
  7. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #7
    Yes, you can use Win 7 to select GPT. When you go to format the drive you will get a popup like this.

    [​IMG]
     
  8. sneak3 thread starter macrumors 6502

    Joined:
    Oct 14, 2011
    #8
    Hey, so formatted the 2nd one on windows side, GPT, ntfs

    However sinetimes, after a restart on OSX side, the 2nd drive will unmount. Does that have to do with GPT/MBR or maybe even with HFS/NTFS?
    This solved my questionThis helped me
     
  9. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #9
    Dunno... OS X can read from NTFS so it should mount. I know people have been having odd disk mounting issues with Mavericks.
     
  10. sneak3 thread starter macrumors 6502

    Joined:
    Oct 14, 2011
    #10
    Weird. It only happened once so far. Maybe it's Tuxera/Paragon that did something wrong.

    So just to be clear, I should NOT use bootcamp to format the 2nd drive if Im not installing windows on it, right? It's alright to use the built-in utility in windows?
     
  11. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #11
    Just use the built in Windows utility.
     
  12. sneak3 thread starter macrumors 6502

    Joined:
    Oct 14, 2011
    #12
    I use that tool and apparently it created a "windows reserved" partition, size 120 mb.

    Is that supposed to happen? If I used MBR would I get the same result?
     
  13. Weaselboy Moderator

    Weaselboy

    Staff Member

    Joined:
    Jan 23, 2005
    Location:
    California
    #13
    Yes, that is the windows boot manager and would be used if you were booting from the drive. Either format would do that and it is normal.
     

Share This Page