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Windows And Linux Having Different Time Set When Dualbooted

Posted Updated
By Utsav Poudyal 1 min read

Introduction

When our computer shuts down, everyting in our RAM is deleted. This includes date and time. So, in order to keep the time running, there is a special clock in the motherboard. It is supposed to be always running.

When the Computer starts, the Operating System reads the time from this clock. And when the computer shutdowns, the Operating System will write that time down to the motherboard.

There would have been no problem, except, Windows uses Localtime and Linux uses UTC. To solve this, you will either have to convert Windows to use UTC, or Linux to use Local Time.

Do one of the following

Convert Windows to use UTC

Its actually quiet straight forward,

  • Open up notepad and paste the following content
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    [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation]
"RealTimeIsUniversal"=dword:00000001
  • Save it with .reg extension
  • Double click to run it

Convert Linux to use Localtime

Its also as easy as running a single command as root,

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timedatectl set-local-rtc 1
Operating System
linux windows