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Auto-sync clock when booted into Windows via Boot Camp System
Using my MacBookPro in the office as a Windows XP Machine via Boot Camp, I finally got nearly all the settings right. One of two problems which remained was that I always had to manually set the time when booting into Windows. Various tips such as "syncing time on startup" didn't worked for me, because I am sitting behind a firewalll.

Today I found this nice tipp on in the forums for www.mactechnews.de which worked fine for me. Finally, I don't have to change my time settings. Just make the following entry in your Windows Registry:
HKEY_LOCAL_MACHINE
 SYSTEM
  CurrentControlSet
   Control
    TimeZoneInformation
     RealTimeIsUniversal
and set it to a DValue of 1. It worked for me. Now Mighty Mouse horizontal scrolling remains my last problem under Windows.

[robg adds: As noted in an earlier Windows-related hint, we will occasionally run Windows tips if they're about making your Mac work better when used as a Windows box. We won't, however, run general Windows usage tips...]
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Auto-sync clock when booted into Windows via Boot Camp
Authored by: DavidHiggins on Jul 26, '06 08:22:44AM

I have actually been using this for about a month now. It doesn't always show the correct time. But when it is off, it is way off. I think this is because my time zone is -7. It seems microsoft ever fully implimented Universal Time and dropped the setting when Windows XP came out. So be aware that it may not always be correct.

But for the little time I spent in boot camp this has been sufficient. Now if only those games ran native in OSX or Parallels I could complete the switch.

PS. Awesome site, and a great and helpful community.



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Auto-sync clock when booted into Windows via Boot Camp
Authored by: EelBait on Jul 31, '06 09:59:36PM

This tip works for me. However, I've found several notes on the Web about this registry key not being officially supported by Microsoft and trying to steer people away from it.

IBM PC Real Time Clock should run in UT

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Auto-sync clock when booted into Windows via Boot Camp
Authored by: sithdent on Sep 11, '06 11:46:49AM

i'm clueless about windows. can anyone explain what/where the "registry" is, and how to get there?



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Auto-sync clock when booted into Windows via Boot Camp
Authored by: wastemytime on Jan 05, '07 10:10:15AM

You're right, for an osx site they don't go into enough detail :)

in windows, go to Start -> Run and type "regedit" (shortcut: windows key +R opens the Run command).

this will open the Registry Editor. the Registry is a central repository of settings in Windows, especially for Windows functions.

drill down the tree as the OP listed and you should find the final variable you need to change.



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Auto-sync clock when booted into Windows via Boot Camp
Authored by: UniAce on Nov 23, '08 09:09:50AM
Using regedit, I drilled down to where teh RealTimeIsUniversal entry should have been, and it didn't exist yet, so I had to add it. I did that by right-clicking and choosing New->DWORD Value and giving it the name RealTimeIsUniversal . I'm pretty sure DWORD is the kind of entry this is supposed to be (inferred from what I read at http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html ). I then double-clicked this new entry to edit it, and set the value to 1.

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