- Aug 14, 2010
- GA-X58A-UD7 Rev.1 BIOS F7
- Intel Xeon W3670
- , ,
- Classic Mac
If you read http://www.tonymacx86.com/multi-booting/96000-guide-dual-booting-mountain-lion-windows-8-a.html carefully, you will note the OS X drive is formatted GUID as OS X Extended (Journaled) - not MBR. The Windows drive is formatted MBR.I mean, windows + mountain lion is simple, both are MBR partition
Yosemite must install on GPT partition. Here the fun begins.
I do not have UEFI motherboard. Now I boot from USB but sometimes is stuck,
and I work on a solution to make simple bootloader with just two options:
OS X Yosemite and Windows 8.1. (I prefer to use Windows bootloader first)
If installing on same drive, same thing - GUID/OS X Extended (Journaled) for OS X partition, hybrid GUID/MBR partition created when you format the second partition MSDOS FAT for instaling Windows.
If it is not working for you - than you are skipping steps or something, because that guide is time tested and works on any socket 775/1156/1366 board - all non UEFI boards. Also works on any other board if you disable UEFI and set it for Legacy BIOS booting.
If using separate drives, then single Windows icon is easy to achieve - use your favorite disk management tool, even the Windows one if you have a Windows machine handy and format your entire drive as MBR NTFS (note that you must partition large drives over 2TB to format the drive MBR - MBR has a limit of one byte less that 2TB in drive size.) Then, when you boot with the Windows Install media and hit the hot key (F8/F10/F12 depending on mainboard) to select a boot device, make sure you select the non-UEFI USB or DVD Windows installer.