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hst51

Date in bios won't stay put

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System is Mojave 1.341. Hardware is GA-Z97-HD3/i3/15 gb DDR3 2133/GTX 660

 

When I set the correct time in bios it is changed to an incorrect value upon reboot. Time remains correct in Mojave desktop. Both bios and desktop are configured to use 24 hr. time instead of AM/PM. I changed the CMOS battery and it made no difference. No other bios parameters are affected, just the time. Latest bios is installed I believe.

 

In researching this the only hits that turned up had to do with dual boot Mac OS/Windows or dual boot Linux/Windows. This is not a dual boot machine.

 

Any idea as to why this is happening?

 

Thanks

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By that I mean the time is no longer correct in bios. It has changed by hours upon reboot within a few minutes of setting and saving it in bios.

Edited by hst51

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Sig created.

 

What do those acronyms stand for? I find lots of information talking about them when I google but nothing explaining what they are.

RTC

DSDT

SSDT

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@hst51

its normal that the bios time is different from macOS. i dont know how to explain it well, probably something to so with UTC vs ????.

dsdt nor clover has nothing to do with it.

 

But thats how it just works.

Edited by ellaosx

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Thank you for your reply and explanation and the bios time being altered. I have found this same effect when running Linux.

 

I modified my search string and found some answers to my question about the acronymns:

 

Found this about DSDT: The Differentiated System Description Table is the main table in the ACPI part of a computer's BIOS.

 

And RTC: A real-time clock (RTC) is a battery-powered clock that is included in a microchip in a computer motherboard.

 

And SSDT: System Service Description Table, an internal data structure within Microsoft Windows. MAC OS must have one too.

Edited by hst51

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You dont need to worry a thing as to why its not synced.

there are patches to make time synced in macOS & Windows.

Edited by ellaosx

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