I want shutdown but NOT turn off...

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  1.    21 Mar 2017 #11

    Edwin said: View Post
    Turn off 'Fast Startup'.
    Thanks, I will try this..
      My ComputerSystem Spec

  2.    21 Mar 2017 #12

    alphanumeric said: View Post
    Wake On LAN maybe? Do these PC's have serial ports? Maybe you can turn them on from your UPS via Wake On Serial command?
    WOL could be an option, would need another machine to issue the WOL packet. I think I could figure something out..
      My ComputerSystem Spec

  3.    21 Mar 2017 #13

    Thinking a bit laterally ...

    What I really want to do is make sure the disk is flushed before the power off

    I wonder if https://technet.microsoft.com/en-us/.../bb897438.aspx sync will do what I want...
      My ComputerSystem Spec

  4. Barman58's Avatar
    Posts : 2,805
    Windows 10 Pro x64 1809 - 17763.134 XP/Vista/Win7/Win8.1 in VM for testing
       21 Mar 2017 #14

    The only guaranteed way to do what you wish is to physically circumvent the Soft start switch used on modern motherboards.

    The front mounted power switch is a momentary action switch that sends a pulse to the motherboard to either instigate a wake-up or shutdown sequence, depending on the current state of the system, (the long press to instigate a power break for problem situations is also monitored for).

    It may be possible to replace or bridge the front mounted power switch to give an always on supply to the motherboard. Of course this may have the result of triggering a shutdown immediately after start-up as a result a constant on signal - this would need to be tested on the particular motherboard as the whether it monitors for a change of state or just an on state of a specific period.

    You may also be able to procure suitable server motherboards that has a straight On/Off power supply system to work better unattended with a UPS
      My ComputerSystem Spec

  5.    21 Mar 2017 #15

    Barman58 said: View Post
    The only guaranteed way to do what you wish is to physically circumvent the Soft start switch used on modern motherboards.

    The front mounted power switch is a momentary action switch that sends a pulse to the motherboard to either instigate a wake-up or shutdown sequence, depending on the current state of the system, (the long press to instigate a power break for problem situations is also monitored for).

    It may be possible to replace or bridge the front mounted power switch to give an always on supply to the motherboard. Of course this may have the result of triggering a shutdown immediately after start-up as a result a constant on signal - this would need to be tested on the particular motherboard as the whether it monitors for a change of state or just an on state of a specific period.

    You may also be able to procure suitable server motherboards that has a straight On/Off power supply system to work better unattended with a UPS
    When start button jams, computer just keeps on cycling on and off. A simple IR or EF relay could also do the trick.
      My ComputersSystem Spec

  6. Barman58's Avatar
    Posts : 2,805
    Windows 10 Pro x64 1809 - 17763.134 XP/Vista/Win7/Win8.1 in VM for testing
       21 Mar 2017 #16

    It may need to have some re-wiring - replacing the feed from the motherboard supply relay to the system power with a direct feed from the PSU which would circumvent the front panel switch and the related circuitry on the motherboard
      My ComputerSystem Spec

  7.    21 Mar 2017 #17

    Ok thanks all for the ideas.

    I will go away and mull it all over. I think I might do my best to "quiesce" the machine before it loses power. That might help it start up properly.

    Wiring the switch sounds interesting but with much scope for things to go bang, so might leave that till last

    I had big hopes for PsShutdown (as I was poking about on sysinternals) It offers an option to shutdown without power off (yay! - just what I want) but it seems not to work on my machines (boo.)
      My ComputerSystem Spec

  8.   My ComputersSystem Spec


 
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