When you run RDISK.EXE, the %SystemRoot%\Repair folder is updated:

01. The System._ file is deleted.

02. The $$Hive$$.tmp file is created as the System hive is being regenerated.

03. Five DC##.tmp files are generated and deleted in the user's home directory for each hive that is generated. If the user doesn't have a home directory, the drive root is used.

04. The $$Hive$$.tmp file is compressed and renamed as System._.

05. The Software._ file is deleted.

06. The $$Hive$$.tmp file is created as the Software hive is being regenerated.

07. The $$Hive$$.tmp file is compressed and renamed as Software._.

08. The Ntuser.da_ file is deleted.

09. The $$Hive$$.tmp file created as the default user profile is being generated from %SystemRoot%\Profiles\Default user\Ntuser.dat.

10. The $$Hive$$.tmp file is compressed and renamed to Ntuser.da_.

11. If the /S option was used, the SAM.-, Security._ and default._ hives are regenerated.