SOLUTION for Time/Clock issue between Windows Vista, Mac OS X, & Sabayon Linux

WinLinMac01 · #1 04-15-2008, 11:33 PM

I now have a tri-boot configuration working between Windows Vista, Mac OS X, and Sabayon Linux. However, it appears that in each O/S the time would appears differently from each other. Can somebody please suggest me what to do to correct this issue? I confirmed to make sure that it wasn't a CMOS problem, and all looks fine. Thanks a lot.

^fire^ · #2 04-15-2008, 11:39 PM

yes i have the same problem, everytime i boot into osX the time is 2 hours after org time and after i boot into XP the time is 2 hrs before

its kinda anoying to set the time up everytime i changed the os

it looks like osx is setting up the hardwaretime in (BIOS) and XP (microsoft) is adding some hours

WinLinMac01 · #3 04-15-2008, 11:42 PM

Lol, any way there is a solution for this? I'm currently experimenting with time synchronization. Hopefully, I can devise some sought of solution for this ridiculous issue. =) But if anyone knows better, please post your solution here as well. Thanks.

Quote:

[cite] ^fire^:[/cite]yes i have the same problem, everytime i boot into osX the time is 2 hours after org time and after i boot into XP the time is 2 hrs before

its kinda anoying to set the time up everytime i changed the os

it looks like osx is setting up the hardwaretime in (BIOS) and XP (microsoft) is adding some hours

Snow · #4 04-16-2008, 12:03 AM

I had a fix for this for Tiger but now I'm in the same boat. Don't worry, I'm sure there's a fix floating around somewhere so it's just a matter of time lads.

R0GUE · #5 04-16-2008, 12:35 AM

That too used to happen to me back with Tiger. Try this and let us know if it still works.

Do you have network server time sync enabled on all OS's?

^fire^ · #6 04-16-2008, 12:40 AM

Quote:

[cite] R0GUE:[/cite]That too used to happen to me back with Tiger. Try this and let us know if it still works.

Do you have network server time sync enabled on all OS's?

yes in my case i have, but it needs sometime befor the right time is set back up (windows about some hours, osx about few minutes)
thx for that hint i will try it later if my osx is running again

WinLinMac01 · #7 04-16-2008, 02:08 AM

Thanks, hope this works with Sabayon Linux as well. =)

WinLinMac01 · #8 04-16-2008, 06:27 AM

Okay, I was able to successfully synchronize my times in Windows Vista and Mac OS X. Now that that is settled, there is one more issue. Since I am also using Sabayon Linux, the time changes in that O/S after I use Mac OS X. I noticed this occurs particularly in my BIOS which made the time Sabayon change. However, after I tried Time syncronization with Sabayon Linux, it appears that the O/S depends on the system BIOS regardless whether or not I enable time synchronization. I see a different time in Sabayon Linux (this doesn't occur if I have a dual-boot setup between Vista and Linux). I logged out of Mac OS X and upon going in my BIOS I clearly can see a different time in my BIOS. I once tried changing the time to the current time, but after going into Mac OS X and restarting the system again, the BIOS moves the time four hours ahead of the actual time. If anyone has a working fix for Linux, that would be greatly appreciated. Thanks a lot. =)

However, I did find a solution, if someone can help me create the appropriate packages, that would be great-

Leopard: Mac OS X Responsibility
In Leopard, /etc/rc.local, /etc/rc.shutdown.local and StartupItems startup/shutdown mechanisms are deprecated.
Instead, the following Leopard-friendly solution will toggle the clock between local time and UTC at start-up and shut-down times. You will need Administrator privileges when performing this procedure.
1. Create new file /sbin/localtime-toggle with the following contents:

Code:

#!/bin/sh

to_utc() {
echo "localtime-toggle: Toggling to UTC."
date `date -u +%m%d%H%M%Y`
}

to_localtime() {
echo "localtime-toggle: Toggling to localtime."
date -u `date +%m%d%H%M%Y`
}

trap 'to_localtime; exit' term
to_utc
{ while true; do sleep 86400; done; } &
wait

2. Ensure that localtime-toggle is executable:

Code:

chmod +x /sbin/localtime-toggle

3. Create new file /System/Library/LaunchDaemons/org.osx86.localtime-toggle.plist with the following contents:

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
   <key>Label</key>
   <string>org.osx86.localtime-toggle</string>
   <key>Program</key>
   <string>/sbin/localtime-toggle</string>
   <key>KeepAlive</key>
   <true/>
   <key>RunAtLoad</key>
   <true/>
   <key>HopefullyExitsFirst</key>
   <true/>
</dict>
</plist>

4. Reboot.

At this point, your computer's clock should correctly be set to UTC as Leopard boots, and reset back to local time as Leopard shuts down.

zuz242 · #9 04-16-2008, 12:07 PM

i got my system syncronized between osx, xp and vista by using the correct
time and timezone in windows and adjusting the timezone correspondingly
in osx. just to be on the safe side did i disble online syncronisation.
other fixes like reghacks and appletime.exe did not work as desired.

Snow · #10 04-16-2008, 02:15 PM

Quote:

[cite] R0GUE:[/cite]That too used to happen to me back with Tiger. Try this and let us know if it still works.

Do you have network server time sync enabled on all OS's?

Still seems to work, thx buddy!

Someone should make this a sticky!!!