Minor (I hope!) Crisis - E450 will not power up Post: 302452418

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Operating Systems Solaris Minor (I hope!) Crisis - E450 will not power up Post 302452418 by Dr Lou on Friday 10th of September 2010 09:44:20 AM

09-10-2010

Registered User

Hergp, thanks for your response.

(By way of clarification: I do, of course, have the power supplies still in the machine - they're all reporting good. I had been removing the CPU DC power modules as part of the diagnostic).

This machine did finally restart - and least got to POST. And it did so - interestingly - with no CPUs, memory or DC power modules.

Then, after lots of vacuuming and re-seating of components one-by-one, it appeared that one DC power module may have been the culprit. Another re-seat, and restart, and it's been running ever since. Has anyone ever heard of an intermittent problem with a DC power module? Should we be worried?

Still don't know what took it down, but we do have some evidence of a late-night power spike, so, am hoping that was the cause...

(No, no power conditioning on this machine for the moment - it's a testbed, so we're not too concerned with its real-world reliability for the moment.)

Dr Lou

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LEARN ABOUT CENTOS

poweroff

HALT(8) 							       halt								   HALT(8)

NAME

       halt, poweroff, reboot - Halt, power-off or reboot the machine

SYNOPSIS

       halt [OPTIONS...]

       poweroff [OPTIONS...]

       reboot [OPTIONS...]

DESCRIPTION

       halt, poweroff, reboot may be used to halt, power-off or reboot the machine.

OPTIONS

       The following options are understood:

       --help
	   Prints a short help text and exits.

       --halt
	   Halt the machine, regardless of which one of the three commands is invoked.

       -p, --poweroff
	   Power-off the machine, regardless of which one of the three commands is invoked.

       --reboot
	   Reboot the machine, regardless of which one of the three commands is invoked.

       -f, --force
	   Force immediate halt, power-off, reboot. Do not contact the init system.

       -w, --wtmp-only
	   Only write wtmp shutdown entry, do not actually halt, power-off, reboot.

       -d, --no-wtmp
	   Do not write wtmp shutdown entry.

       --no-wall
	   Do not send wall message before halt, power-off, reboot.

EXIT STATUS

       On success, 0 is returned, a non-zero failure code otherwise.

NOTES

       These are legacy commands available for compatibility only.

SEE ALSO

       systemd(1), systemctl(1), shutdown(8), wall(1)

systemd 208																   HALT(8)