Sotirios Papakonstantinou Posted July 8, 2012 Share Posted July 8, 2012 Hello! I recently created a dual-boot of MacOS 10.7.2 (Lion) using iATKOS L2 DVD-ROM and Windows 7. I noticed that when booting in Lion, the time is correct. If I reboot and select Windows 7, the time is three hours back. In both OSes I have checked the time to automatically syncronise via internet. Is there a fix, or I have to correct the time evrytime I boot to Windows 7? Thank you spapakons@yahoo.gr Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/ Share on other sites More sharing options...
Gringo Vermelho Posted July 8, 2012 Share Posted July 8, 2012 Change Windows 7 to use UTC as timebase instead of local time. Here's how: http://mikebeach.org...em-time-issues/ If you should google this, ignore any warnings about RealTimeIsUniversal not working, it's true that it did not always work right in XP and Vista but there are no problems when using it with Windows 7. I've been using it for years. Your BIOS clock will be "wrong" after doing this, it will reset itself to UTC - don't adjust it, leave it. With the registry change Windows will compensate for the difference and OS X will continue as normal. Problem solved. Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1831967 Share on other sites More sharing options...
eep357 Posted July 8, 2012 Share Posted July 8, 2012 Does this just do the same thing or also let bios clock be correct? http://www.osx86.net/downloads.php?do=file&id=810 I've not tried it cause don't use windows very often. Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1831991 Share on other sites More sharing options...
Gringo Vermelho Posted July 8, 2012 Share Posted July 8, 2012 I don't know what that is and I don't want to register there just to find out. In my opinion the Windows registry patch is the least intrusive way to do it and that makes it the best way. How often do you check the time by looking at your BIOS anyway? The other ways I've seen involve scripts that run at startup, disabling automatic online time syncing and other stupid things. 1 Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1832001 Share on other sites More sharing options...
TimeWalker75a Posted July 8, 2012 Share Posted July 8, 2012 There's an old program from bootcamp that is meant for that. Its called appletime.exe (Google is your friend). You set it as a startup item in windows and it adjusts the time difference accordingly. Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1832010 Share on other sites More sharing options...
Gringo Vermelho Posted July 8, 2012 Share Posted July 8, 2012 See? That's what I'm talking about. Why on God's green earth would I want executables running on startup when a simple addition to the registry does the trick. Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1832012 Share on other sites More sharing options...
nyolc8 Posted July 9, 2012 Share Posted July 9, 2012 I'm using the RealTimeIsUniversal registry trick for 2 years like Gringo Vermelho, and not having any problem at all. Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1832132 Share on other sites More sharing options...
Sotirios Papakonstantinou Posted July 11, 2012 Author Share Posted July 11, 2012 I haven't yet tried the registry hack. I'll let you know. I tried disabling automatically adjusting time via internet in both MacOS and Windows and now I see the strange effect that Windows has three hours back, as before, but MacOS has three hours after, is no longer correct! So I would better set MacOS back to auto again. Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1832771 Share on other sites More sharing options...
RobertX Posted July 12, 2012 Share Posted July 12, 2012 here's an installer that works from within os x "dual-boot timefix for mac, adjusts from UTC to local-time zone, very useful" http://www.osx86.net...do=file&id=1329 i use it myself... just run the package, reboot, adjust your time in bios and that's it... Link to comment https://www.insanelymac.com/forum/topic/280385-keeping-time-right-in-lion-windows-7-dual-boot/#findComment-1832830 Share on other sites More sharing options...
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