Can I upgrade from Tiger to snow leopard using an external DVD drive
I've been trying to upgrade to Snow Leopard from Tiger but keep nothing happens. I keep getting a grey folder with a question mark on it. Can anyone tell me what this means?
iMac 17" Flat Panel, Mac OS X (10.4.11), 160 GB, 1.83 GHZ Intel Core Duo, 512 MB DDR2