XP is a relatively large system, it contains a lot of features for ordinary users, we can completely on XP to thin action.
1, in a variety of hardware and software installed properly, in fact, XP needs to update the file when it is very few. Delete system backup file: Start → run →sfc.exe/purgecache, nearly 3xxM.
2, delete driver backup:%windows%/driver/cache/i386 directory of Driver.cab files, usually this file is 76M.
3, I do not see the habit of help, so keep the%windows%/help directory of Things for me is a kind of injury, hehe. All killed, nearly 40M.
4, a will after the upgrade is completed you will also find%windows% many similar $ntuninstall,q311889$ these catalogs, kill it, 1X-3XM.
5, just the hard drive and so on, so the Pagefile.sys files are pointing to a place: Control Panel → system → performance-advanced → virtual memory → changes, note that the key "settings" will not take effect. \ win2000/server
6, uninstall not common components: with Notepad to modify%windows%/infsysoc.inf, with the Find/Replace function, in the lookup box input, hide, replace all empty. In this way, all of the hide are removed, save and then run "Add-Remove Programs", you will see "Add/Remove Windows Components" more options; Delete the game ah, the Code table AH wait for things.
7, delete the Windows/ime without the input method, 8xM. I have reinstalled my own zrm input method.
8, if the space is tense, enable the compression function of NTFS, this will also use less 2x% space, but I did not do.
9, shut down the System Restore, this break function to me so often download, testing software is simply a disaster, with the right mouse click on the desktop "My Computer", select "Properties", find "System Restore", select "Turn off System Restore on all drives" Oh, you can save space.
If you can follow the above process, your original 1.4G XP, can be reduced to 800 below