Challenges in Linux Mint 18 Cinnamon installation

The scenario is I have a Dell Inspiron machine dual booting Window 8.1 and Debian 8. I wanted to replace the Debian with Linux Mint 18 Cinnamon.

1. Download the ISO file (64bit) from https://linuxmint.com/download.php
2. Verify the downloaded ISO file from  https ://linuxmint.com/verify.php
3. Press F2 during boot screen and make the fast boot to OFF & save and exit.
4. Press F12 during boot screen and make the boot mode as UEFI and Safeboot off.
5. Using Unetbootin create a bootable ISO using the USB disk.
6. In Windows > Settings > System &recovery > Using your Pendrive > restart
7. It boots into Mint 18, Install option 
8. At some step it asks for partition choose "something else"
9. Delete the existing "/" partition and "/home" using Minus "-" 
10. Create partition "/" and "/home" using "+" make sure that format is checked
11. After installation grub did not appear and it boots into windows directly.
12. bcdedit /set {bootmgr} path \EFI\mint\grubx64.efi   did not work
13.  Attempted this http://howtoubuntu.org/how-to-repair-restore-reinstall-grub-2-with-a-ubuntu-live-cd#.UkpRK4Z6Y6Q  
14. grub-install /dev/sdX  showed error, did not work - showed efi error
15. Then I installed boot-repair from LIVE CD terminal as told here https://help.ubuntu.com/community/Boot-Repair. Run it with "Recommended repair"
16. That's it. It fixed everything(I should have done it before itself). Here is a view of the Workspace.