This is the simplest install / upgrade method and the one that you should follow in case you are not sure which is the best option for you. It will work with some qualifiers: your hardware must be functional and your hardware must be as close as possible to the original mac machine approved for the system. What you see in the picture is what you will receive! For any issues that you might have during the installation please CONTACT me for assistance ( more than 30 years of experience in MAC system). I would be glad to help you through all the necessary steps. If you get any error message please access our online free technical support ( at the bottom of the installation instruction page which comes with the item) Please do not post bad feedbacks before contacting me. All orders are shipped same day or max next day (during the week), Mondays if the order was placed during the weekend using. Check out my add. Please keep in mind that shipping could take between 5-7 days for Standard shipping and 3-6 business days for Expedited. Please do not order if you cannot wait. Buyer pays for return shipping. Thank you!