My Windows XP is installed on a 20 GB partition, and is almost full due to the programs installed.
The installation guide for Windows Server 2008 (available at Microsoft’s website) recommends 40 GB, plus more space for you files. 20 + 40 GB is thus engaged.
Next, Fedora 7 requires 7 GB for a complete install. That is 47 GB.
So if I want to upgrade from XP to Vista, I’d do it on a 30 GB partition. This engages 57 GB.
So about 100 GB remains for the videos, music, …
Looks like 160 GB ain’t any spacious (to a CS student at least). While purchasing the 160 GB hard disc months ago, I hardly believed I’d need even half of it.