It depends on what you want to install. The base and base-devel package groups along with several additional packages related to speech, networking and other things will take less than 200MB on your hard drive. However, you will need probably 1GB or more if you want a graphical desktop. LXDE and XFCE will take the least amount of space, probably between 500MB and 1GB,whereas GNOME will likely need 2 to 3GB. I currently have a talking Arch installation that includes GNOME, Firefox, thunderbird, Pidgin and more running on a 4GB flash drive, and it shows over 1GB free. You have probably noticed that the Talking Arch live install image is now a nearly 400MB download. This is only because the image can be used on both 32-bit and 64-bit systems with only a command entered at the boot prompt. Your base install will likely use less than half of that space after installing to a hard disk. Just be sure to type arch64 at the boot prompt when loading the install image if installing on a 64-bit machine. ~Kyle
