Microsoft has removed the Rdisk utility from XP and Win2K, thereby eliminating your ability to create an Emergency Repair Disk (ERD) for recovering the OS in case of a system crash. As part of the emergency repair process, the OS would update the \%systemroot%\repair folder, which contains backups of core registry values.

To update the \%systemroot%\repair folder in XP and Win2K, you must back up the necessary system-state files and ensure that you’ve selected the proper system state during the backup.

Here is an easy way to back up the system state to update the \%systemroot%\repair folder.
Just create a script or command file that contains the following command:

ntbackup backup systemstate /f %temp%\backup.bkf
del %temp%\backup.bkf