Resposta para "Why does my new hard drive not show up?"Very useful information exchange. I am just finishing installing a new hard-drive, Seagate 500 Gb Semi solid state drive, and the Mac OS 10.5 (Snow Leopard), and followed by the Time Machine Backup- on my black MacBook, Intel Core-duo - about 6 years old. Everything is going well. The Seagate did not have any jumpers to remove! The semi solid-state drive is less noisy.