Hello Thires also an update disk that you can perchase on ebay for about $9.00 bucks to help get your internal drives up to date before you update. You can even find the the 10.4.11 softweare you need for the Apple Pismo laptop that you have but be prepaird to spend some cash. I have seen the bid as high as $149.00 If anyone Knows where to get it for less please let me Know at -Rosario1649@yahoo.com