Applying Service Packs and Hot Fixes
nMake a complete backup of the Registry using the
Registry Editor or the REGBACK
utility on the Microsoft Windows XP
Professional Resource Kit
nExport the disk configuration data from Disk Administrator
nBecause service packs
rewrite many system-level files, you must
disconnect all current users, exit all applications, and temporarily stop all unneeded services before installing
any service pack or patch