I tried to remove all known junks from the window dir e.g. $NTUninstall..., temp files, etc and setting no pagefile. But I still got around 4GB usage in c: after fresh installation of the windows(my installation path is winxp sp2 from the CD, then WindowsUpdate to SP3/IE8). Is it possible to go down further? I'm sure there are a lot of unneeded files in window dir but not sure which one to remove. Does anyone ever achieved a smaller size?
If you want to know why, I'm running WinXp SP3 in a Virtual Machine (I'm using VirtualBox) and needed to create a smallest possible OS image to be stored in a USB flash drive.