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I am dualbooting ubuntu 13.10 and windows 7. When I boot into ubuntu and then into windows, the windows time is +2 hours of the correct time.

I know this has to do with the way the operating systems handle BIOS time. For ubuntu it is UTC and for windows is local time.

So I searched about it and found that i need to make a .reg file with these contents and then run it.

Windows Registry Editor Version 5.00

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation]
     "RealTimeIsUniversal"=dword:00000001

But it doesn't work. Even if I do it, after some time windows changes the clock again to +2 hours... I also tried rebooting immediately after doing the fix, but still nothing.

Minas Mina
  • 829
  • That only works with Windows 7 and Service Pack 2. Still... this is a windows problem that Ubuntu made a wiki page for to fix it... This is how to fix this from Ubuntu:http://askubuntu.com/questions/90504/why-does-time-change-in-ubuntu-after-installing-windows?rq=1 – Rinzwind Dec 15 '13 at 10:26
  • I have windows 7 service pack 1. What do you mean service pack 2? Here http://windows.microsoft.com/en-us/windows/service-packs-download#sptabs=win7 it says that SP 1 is the latest. – Minas Mina Dec 15 '13 at 18:49

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