Recently upgraded a 2009 white book with El Capitan. I have done a Time Machine backup that I wan't to install on an old SSD disk that I want to use as system disk. The issue I keep having with the empty SSD installed is an error icon that shifts between it and the apple logo. I have tried bringing up the install interface on the original disk and then don't have any issues to start the back-up install and finding the back-up on the external drive. Anyone have any clues?