Microsoft DOS scanreg command
Scanreg was first introduced by Microsoft with the introduction of Windows 98 and was a great utility until the introduction of Windows XP. Using Scanreg a user can backup his or her registry manually or allow Windows to backup the registry daily (default).
The scanreg command is an external command that is available in the below Microsoft operating systems.
Usage: SCANREG [/<option>]
|BACKUP||Backup the registry and related system configuration files.|
|RESTORE||Choose a backup to restore.|
|FIX||Repair the registry.|
|COMMENT="<comment>"||Adds the specified comment to the CAB file while backing up.|
Run alone, scanreg will check the registry for errors and if requested backup the registry.
Must be run from a MS-DOS prompt and not a shell. Running this command allows you to restore an earlier backup of your system registry.