4. Create Root Partition: The next partition will be mounted at /. I allocated 15,000 MB, or 15 GB to it. And I used the default file system. Because there is just one primary partition left, the installer will create it and subsequent partitions as logical partitions. OK.
Mint Create Boot Partition

5. Create Home Partition: The third partition will be mounted at /home. Aside from the disk space, I used the defaults for the other options OK.
Mint Create Root Partition

6. Create Swap Partition: The last partition is for Swap. It has been suggested that on a 32-bit system, 2 GB is all you need for Swap, and 4 GB or more for a 64-bit machine. Be sure to select “swap area” from the Use as dropdown menu. OK.
Mint Create Home Partition

7. Complete Partitions List: When all the partitions have been created, you should see them listed in the main window of the Advanced Partitioning Tool. The final task at this step is to specify the Device for boot loader installation. By default, it is the MBR of the HDD Mint is being installed in, which, in this case, is /dev/sda. But we want GRUB to be installed in the boot partition, which is sda3 in this tutorial. So, select /dev/sda3 from the dropdown menu. Note that /dev/sdb is the default in this tutorial, but on a single disk system, /dev/sda will be the default.
Mint Partitions

8. Boot Loader Device: After the right partition has been selected for the boot loader installation, the window should look like the one shown below. Click Install Now.
Mint Bootloader Device

After the installation has completed, rebooting the computer will drop you into Windows 8. Last and final task, is to add an entry for Linux Mint in Windows 8’s boot menu. There are several options for doing it, but the one that I’ve been using is EasyBCD from NeoSmart Technologies. It is free for personal use.

9. Download and Install EasyBCD: Download EasyBCD from here. Install it as you would any other Windows application. After installation, start it, if it is not started automatically. The main window is shown below. To add an entry for Linux Mint, click on the Add New Entry tab.
EasyBCD Windows 8

10. EasyBCD – Add Entry: Then click on the Linux/BSD tab. GRUB 2 is the version of GRUB used by Linux Mint 13, so select it from the Type menu. For the Drive dropdown menu, Automatically locate and load always worked for me, but you can select the specific partition, if it makes you happy. Modify the Name field to match, then click the Add Entry button.
EasyBCD Mint 13

11. EasyBCD – Preview Boot Menu: To preview what Windows 8’s boot menu will look like, click the Edit Boot Menu tab. You can change the boot order and mess with a few other options from here. Save Settings, exit EasyBCD and reboot the computer.
EasyBCD Mint 13

You should be presented with Windows 8’s boot menu, with the option to boot into Windows 8 or Linux Mint 13.