Dear all I was hoping you can help me understand a process when updating a macbook pro better. I have a macbook pro from 2010. I have been so happy to won it, but since I did an update it has been painfully slow – in reality unusable. Reading about this on the net I decided to spend some money on an upgrade. I have bought a new SSD from Samsung so that I can replace my old disk. When I got my computer the OS was preinstalled so I never got a disk. I can understand there are basically two ways to approach the update with regard to the OS that seems viable for me. I could install the new disk and then boot from a external disk where I have an timemachine copy. Or I can make a new install of the OS with a USB key and boot from that? If I do a new install perhaps it will be better as a ‘fresh computer’ will be faster?