- First create 2 partitions Extended Journal when installing OS X. Make sure to jot down the size so you won't wipe out the wrong partition when you install Windows on it later.
Hint: don't make both the same size
- Use Disk Utility to prepare a Mac OS X Extended partitions (don’t ever use Fat32, Disk Utility will mess up your drive)
- After installing OS X, everything all setup. Then install Windows
- Create a FAT32 usb drive, extract Windows 10 64-bit iso there (done on a Windows system)
- Boot to Win10 usb drive, select custom install, locate the partition that is not OS X, delete it. Then select it (unallocated space) format it to NTFS, install Windows there.
- Windows will automatically boots back to Windows. Install all drivers...etc.
- Now to fix the boot option
- Go to BIOS, create boot option. Browse to /EFI/Clover/Cloverx64.efi, give it a Name. Now move the Clover boot entry to top.
- Save and reboot. Now you'll see the option to boot Windows or OS X from the Clover GUI.
To fix the time in Windows, launch regedit
navigate to
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation]
create a DWORD (32 bit) value, name it RealTimeIsUniversal. Set the value to 1.
Exit
Boot to OSX, then reboot to Windows. You should see time is correctly sync'd up.