Basic guide

Sync time between Windows and OS X

After dualbooting or multibooting successfully, the time information between OS X and Windows will not match each other. To fix this:

  • Boot into OS X, set the timezone and time correctly
  • Boot into Windows, do not attempt to update time by using “Adjust Date/Time”. Open Registry Editor
  • Locate

  • Right click in the blank space of the right pane, select New > DWORD (32-bit) value, name it RealTimeIsUniversal. Double click the newly created file and change the value to 1. Save and reboot into OS X
  • Wait 1-2 minutes, then reboot into Windows. Now the time information between the 2 OS is matched

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