teamjh14
September 6th, 2009, 01:20 PM
If any of you dual boot Ubuntu with Windows (or triple with OS X), you'll notice that your computer lives in a time warp. Here's why:
http://ubuntuforums.org/showthread.php?t=1254464
(Thanks tgalati4)
Local time is right now. I mean right now...now. N-..Now. UTC is a base time from which all other time zones can be derived from by adding or subtracting hours. Windows finds the local time, then stores it in BIOS. Ubuntu then looks at the BIOS, and adjusts, assuming the time is not local but UTC (AKA GMT).
Since I refuse to change other things to fit Windows standards, I hunted down how to switch Windows time to UTC.
http://ccgi.maxpower.plus.com/2007/04/30/dual-booting-causes-clocks-to-go-mental/
After a brief explanation, the author tells us to create a text file containing the following:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\TimeZoneInformation]
"RealTimeIsUniversal"=dword:00000001
Save the file as time.reg, then double-click it. Hit "Okay" on those warnings; you know what you're doing. Reboot (making sure the time is proper before you do), and Windows should be alright. Test it by booting into Ubuntu then Windows to check the time.
In reading, I've found some users have issues with this solution. Nothing serious, just the time clock in Windows getting confused from time to time. I have yet to experience any of these issues, though.
If you'd prefer to change Ubuntu settings, here's the way to go:
http://www.shivaranjan.com/2009/06/20/how-to-prevent-ubuntu-linux-from-resetting-or-changing-computer%E2%80%99s-bios-or-hardware-clock/
Open the Terminal and type in the following:
sudo gedit /etc/default/rcS
Hunt down the line which reads UTC=yes. Change yes to no and save. Again, best to check the time and reboot. And again, I don't cater to Microsoft or Windows system standards, so I haven't tried this. If anyone does, please post how well this works.
There you are. A couple simple solutions to an annoying (at best) issue when dual booting.
And BTW: If you ARE triple booting and need to adjust the Mac OS X time, you're on your own. You can try this:
http://wiki.osx86project.org/wiki/index.php/Tips_And_Tricks#Use_Localtime_instead_of_Universal _for_RTC
I suspect this is only a scripting work around. I couldn't find anything more effective than this. If anyone tries this, please post how it works.
http://ubuntuforums.org/showthread.php?t=1254464
(Thanks tgalati4)
Local time is right now. I mean right now...now. N-..Now. UTC is a base time from which all other time zones can be derived from by adding or subtracting hours. Windows finds the local time, then stores it in BIOS. Ubuntu then looks at the BIOS, and adjusts, assuming the time is not local but UTC (AKA GMT).
Since I refuse to change other things to fit Windows standards, I hunted down how to switch Windows time to UTC.
http://ccgi.maxpower.plus.com/2007/04/30/dual-booting-causes-clocks-to-go-mental/
After a brief explanation, the author tells us to create a text file containing the following:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Contro l\TimeZoneInformation]
"RealTimeIsUniversal"=dword:00000001
Save the file as time.reg, then double-click it. Hit "Okay" on those warnings; you know what you're doing. Reboot (making sure the time is proper before you do), and Windows should be alright. Test it by booting into Ubuntu then Windows to check the time.
In reading, I've found some users have issues with this solution. Nothing serious, just the time clock in Windows getting confused from time to time. I have yet to experience any of these issues, though.
If you'd prefer to change Ubuntu settings, here's the way to go:
http://www.shivaranjan.com/2009/06/20/how-to-prevent-ubuntu-linux-from-resetting-or-changing-computer%E2%80%99s-bios-or-hardware-clock/
Open the Terminal and type in the following:
sudo gedit /etc/default/rcS
Hunt down the line which reads UTC=yes. Change yes to no and save. Again, best to check the time and reboot. And again, I don't cater to Microsoft or Windows system standards, so I haven't tried this. If anyone does, please post how well this works.
There you are. A couple simple solutions to an annoying (at best) issue when dual booting.
And BTW: If you ARE triple booting and need to adjust the Mac OS X time, you're on your own. You can try this:
http://wiki.osx86project.org/wiki/index.php/Tips_And_Tricks#Use_Localtime_instead_of_Universal _for_RTC
I suspect this is only a scripting work around. I couldn't find anything more effective than this. If anyone tries this, please post how it works.