2 - 4 horas
I wanted to add a second hard drive to my 2011 MacMini and use the original 750GB as storage only. I installed a 120GB SSD for the OS drive for fast booting and faster program loading.
The repair went flawlessly, your guides and photos were excellent, only one error noted being one of the screws has changed on the fan housing. It was no big deal and easy to figure out.
Read through the guide, watch the video and give it a try. I was amazed how easy it actually turned out to be.