creat MBR partition without bootcamp or another to install windows in GPT guid without bootcamp

Your 2012 MBP supports OS X and Windows. Any additional partitions created by users are not allowed. Two system partitions - EFI and Recovery HD are internal for the Mac to work.

You need to use Bootcamp Assistant to create/delete partitions. Do not use any other tools for partitioning. Do not use Disk Utility to partition your disk. If you have, then delete all such manually created partitions. Once you have cleaned up the disk, the only partition visible normally to a user is OS X. At this point use

Please start at

How to install Windows using Boot Camp - Apple Support

https://help.apple.com/bootcamp/mac/5.0/help/

Boot Camp 5.1: Frequently asked questions - Apple Support

The TechRecipe article is old. Some of the commands still apply, but it is a very custom solution.

Yes, there is a way to create a custom hybrid MBR to accommodate additional partitions.

1. This is a very fragile arrangement, and any Apple Software upgrade can break it.

2. Any Hybrid MBR changes require this process to be repeated every time it breaks, which you should be willing to undertake.

3. If you want to do this, and maintain it, please post the output of the following commands from OS X Terminal?

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

4. Sudo command require your password, which is not echoed back to you. You may also see a warning about improper use of sudo and potential data loss.

5. Can you describe what exactly are you trying to establish?

6. You previous attempt with exFAT failed, because your Mac requires a Hybrid MBR which maps the GPT to a MBR using a one-to-one mapping.

7. If you just want to run OS X and Windows, and do not want to run any custom disk partitions, you should use Bootcamp Assistant. If it is failing, it can be addressed.

If you want to live on both sides of the world, use a Virtualizer (ParallelsDesktop, VMwareFusion, VirtualBox). You can make more VirtualMachines in one Virtualizer. Format the Windows virtualMachines as NTFS. Easy reading writing copying etc between the VirtualMachines and OSX. There is a comparison of the Virtualizers (and Bootcamp) here:

http://www.digitaltrends.com/computing/best-virtual-machine-apps-for-mac-linux-a nd-windows-pcs/

Lex

Can you post the output of the commands listed in my post under item 3? These provide better detail than the screen shot.

diskutil list

diskutil cs list

sudo gpt -vv -r show /dev/disk0

sudo fdisk /dev/disk0

In Disk Utility, please delete Untitled 2 (use the Disk Utility and the "-" sign). At this point you have only one partition. Drag the bottom right corner of the partition to the maximum it will allow you to. Post the output of the same commands.

Please use the following steps.

1. Using Mac Basics: Time Machine backs up your Mac - Apple Support, back up your OS X system.

2. Use OS X: About OS X Recovery - Apple Support and boot into Internet Recovery and erase your internal disk.

3. OS X Yosemite: Recover your entire system from the back up in step 1.

Post the output of the same commands.