OS selector every time

Discussion in 'Mac Basics and Help' started by airlied, Sep 9, 2018.

  1. airlied macrumors 6502

    airlied

    Joined:
    Jul 8, 2011
    #1
    Hey all! Just got a quick question here!

    You know by pressing option key during reboot takes you to OS selection display which has all OS and recovery partitions. But how to set this as default? Because Im using it in clamshell mode and an external keyboard wont work during restarts. I need to switch between OSs frequently and don’t want to take my mac out from the stand and open the lid every time.

    Thanks!
     
  2. airlied thread starter macrumors 6502

    airlied

    Joined:
    Jul 8, 2011
    #2
    and i know you can always choose which OS to boot from system preferences. But I just want to have the option to choose from the start screen.
     
  3. keysofanxiety macrumors G3

    keysofanxiety

    Joined:
    Nov 23, 2011
    #3
    There’s no way to do this automatically unless you install a custom boot loader like rEFIt I’m afraid.
     
  4. airlied thread starter macrumors 6502

    airlied

    Joined:
    Jul 8, 2011
    #4
    even a terminal command couldn’t do this?
     
  5. keysofanxiety macrumors G3

    keysofanxiety

    Joined:
    Nov 23, 2011
    #5
    Not to my knowledge, the boot loader is essentially firmware which loads before any OS commands, so Terminal command wouldn't do anything. I'm not sure if there's anything in Single User Mode which loads beforehand but I'm just guessing at this point.

    The only way I know of is through a custom boot loader. Sorry. Hopefully somebody else can be of further assistance.
     
  6. airlied thread starter macrumors 6502

    airlied

    Joined:
    Jul 8, 2011
    #6
    Thank you! I think I'll just attach a USB keyboard to save the hassle.
     
  7. BrianBaughn macrumors 603

    BrianBaughn

    Joined:
    Feb 13, 2011
    Location:
    Baltimore, Maryland
    #7
  8. airlied thread starter macrumors 6502

    airlied

    Joined:
    Jul 8, 2011
    #8
    I’ll give a try! thanks! But i think before that i need to know what im doing first
     
  9. Fishrrman macrumors G5

    Fishrrman

    Joined:
    Feb 20, 2009
    #9
    OP wrote:
    "I’ll give a try! thanks! But i think before that i need to know what im doing first"

    Unless you "know what you're doing", DON'T be fooling with "custom bootloaders" or anything like that.

    Just press the option key and start up that way.
    Could save you A LOT of trouble.
     
  10. airlied thread starter macrumors 6502

    airlied

    Joined:
    Jul 8, 2011
    #10
    Yup, thanks for advice!

    Im gonna do some research on this bootloader thing, gonna make sure Im 100% aware of what Im doing. Otherwise Id better stick to option key.
     
  11. Velin macrumors 65816

    Velin

    Joined:
    Jul 23, 2008
    Location:
    Hearst Castle
    #11
    $ sudo nano efibootmgr -format c:/

    That will get you where you need to go.
     

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