Ways to power up the Mac Mini beside the power button

Discussion in 'Mac mini' started by Ploki, Jul 12, 2019.

  1. Ploki macrumors 68040

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    Jan 21, 2008
    #1
  2. saulinpa macrumors 6502a

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    Jun 15, 2008
    #2
  3. Ploki thread starter macrumors 68040

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    Jan 21, 2008
    #3
    the question is how do i enforce powerfailure without any damage to the system?
    i've read about the shutdown -u command but it does nothing here.
     
  4. saulinpa macrumors 6502a

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    Jun 15, 2008
    #4
    What do you mean "enforce powerfailure"? I can do a normal shutdown, turn off power via UPS button, come back later and power on via UPS button, system boots up without power button.
     
  5. Ploki thread starter macrumors 68040

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    Jan 21, 2008
    #5
    How do you do that? :eek:
    you mean i just need to:
    1) enable poweroff after power failure
    2) shutdown as normal (via shutdown menu)
    3) kill power via external means (unplugging cable, killing a switch)
    4) power back on?
     
  6. saulinpa macrumors 6502a

    Joined:
    Jun 15, 2008
    #6
    Yes, but there is no "enable poweroff after power failure" option that I know of. Do you see the option "Start up automatically after a power failure"? Maybe it only works properly if you have a UPS attached via USB cable. I never tried it without one.
     
  7. wardie macrumors regular

    Joined:
    Aug 18, 2008
    #7
    I have a UPS with USB cable and yes the power off automatically works fine and it gives you a range of parameters like % battery remaining, time remaining etc. But I can’t think either how to do it without this option. Maybe you could “spoof” a UPS service via some hardware and USB?
     
  8. Ploki thread starter macrumors 68040

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    Jan 21, 2008
    #8
    yeah sorry - unfortunately it only works if i cut power, not if i shutdown correctly, so i guess i need an UPS just to get that functionality. :O

    I tried the shutdown -u which supposedly simulated a "dirty" shutoff, but the command doesnt work.
    --- Post Merged, Jul 12, 2019 ---
    that sounds great.
    or some piece of code that would enable UPS option on power management
     
  9. saulinpa macrumors 6502a

    Joined:
    Jun 15, 2008
    #9
    Good that the root issue was identified. I can confirm that after disconnecting the USB connection to the UPS my Mac no longer boots when power is restored.
     
  10. Ploki thread starter macrumors 68040

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    Jan 21, 2008
    #10
    seems such a mundane thing to implement for a small headless Mac, christ, most people have it tucked somewhere behind a screen/drawer/whatever. Having to use an UPS or hassle with finding the power button seems like a terrible implementation
     

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9 July 12, 2019