In addition to the Sp1.cab file, the Update.exe program installs a new Drvindex.inf that points to Sp1.cab for all of the updated drivers and also points to Driver.cab for all of the remaining drivers. This file contains only updated versions of drivers that exist in the original Windows 2000 or Windows XP Driver.cab file. The service pack does not update the Driver.cab file itself instead, the Update.exe program installs an additional driver file named Sp1.cab (or other if the SP number is greater). Setup and other components use this file to install the drivers for new devices (for example, a PCMCIA card or a USB keyboard) without requiring access to the Windows CD or the network. For example, Windows 2000 and Windows XP include a file named Driver.cab, which contains all of the files potentially installed by Plug and Play (PnP)-class installers. You do NOT have to Reinstall Windows 2000 or Windows XP Service Packs after system state changes…Īfter you have installed the service pack, you do not need to reinstall it if you add a device or new software to your computer.
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