Wednesday, May 31, 2006

Fixing windows OSX bootcamp time issue

I found this solution on a forum posted by "josmul123" here

*** WARNING: Editing your registry improperly can render your Windows installation inoperable. Proceed VERY carefully. I am not responsible if you mess something up. ***

The short solution for people who know how to edit the registry:
A DWORD key called

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSetControl\
TimeZoneInformation\RealTimeIsUniversal

needs to have the value of "1"

The step-by-step solution is as follows:
1. Boot Windows

2. Click Start --> Run and type regedit. Click OK

3. The Windows Registry Editor should pop up. Navigate within the explorer to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet
then to:

Control\TimeZoneInformation

4. Click on the TimeZoneInformation "folder" from the navigation pane if you haven't already done so.

5. This assumes the correct key doesn't exist. If it does, you will just change the existing key's value: Right click on the white space within the folder (If you don't have a right mouse button, you may need to download a program called applemouse to emulate the "control-click" of the apple 1-button mouse). Select new --> DWORD Value. Title the key "RealTimeIsUniversal" (No quotes). Set the value to "1" (No quotes again). Hexidecimal should be fine.

6. Either reboot and set the clock in MacOS or set the clock in Windows. You should now be able to reboot into either OS and have a correct clock.

6 Comments:

Anonymous Anonymous said...

Thanks a lot for your help ! Ralf

5:21 pm  
Anonymous ralf@charaoui.com said...

Hi, again, well i followed your instruction but unfortunately it didn't work. I have to actualize through the internet time server. Is it perhaps because i live in France (Paris time zone?). I have checked everything but after rebooting the 'old' time comes again. Best regards, ralf@charaoui.com

9:59 am  
Anonymous Anonymous said...

After succesfully installing BootCamp 1.0 with "3" partitions, as explained in your Blog, I have just tried to update it to BootCamp 1.1.1 and the BootCamp Assistant won't let me start because: "your startup disk must be formatted as a single MacOS extended (Journaled) volume or already partioned by BootCamp Assitant for installing Windows.". Do you have any suggestions on how to update it to 1.1.1 without going back to 2 partitions and loosing everthing on the side?
MancinRob

5:42 am  
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