My old 40 gig harddrive is aging, to the point where it alerts me on every boot up and I have to press f1 to start. So I figured that it would be good to get a new drive. Since I like hard drive space, I figured I would find the biggest drive that is affordable. The computer: Compaq Evo n 800c http://h20000.www2.hp.com/bizsupport/TechS...ng=en&cc=us It has the most recent bios update. The hard drive: Seagate Momentus 5400.3 (Perpendicular Recording) ST9160821A 160GB 5400 RPM 8MB Cache ATA-6 Notebook Hard Drive http://www.newegg.com/Product/Product.asp?...N82E16822148073 Normally I would think that it would be no big deal, but I have 2 questions 1 I read somewhere that windows can not read more then 127 (might have been 137) gigs in a drive, which would not be a huge deal, but it would be nice to have all of it. 2 I thought all laptop 2.5in drives were compatible, but in the reviews it says: “Make sure that your laptop is ATA and that the BIOS can support this larger capacity.” More info: I looked at an older hard drive that my laptop used and on it under interface it says “ATA/IDE”