Scanreg is a real mode registry-checking program with the following switches.
Scanreg /Backup (Backs up the registry and related system files)
Scanreg /Restore (Shows a list of previous registry backups from which one can be chosen for restoration)
Scanreg /Fix (Repairs the registry)
Scanreg /Backup Comment="<comment>" (Adds the specified comment to the CAB file while backing up)
Files produced during a registry backup have the formRb###.cab.
Editing the Scanreg.ini file in the Windows folder modifies the way Scanreg behaves. The following settings can be changed in Scanreg.ini.
Backup : The registry will not be backed up if this is set to 0, the default value is 1
Optimize : Automatic optimisation of the registry is skipped if this is set to 0, the default value is 1.
MaxBackupCopies : One backup is kept each day for a number of days specified by this value at which point the oldest is discarded. The default value is 5.
BackupDirectory : The default backup directory is c:\windows\sysbckup, adding a complete path at this point can change this.
Files : Extra files can be added to the registry backup using Files=[dir code,] filename1,filename2 etc. Examples of dir codes are:
10 : windir (e.g. c:\windows)
11 : system directory (e.g. c:\windows\system)
30 : boot directory (e.g. c:\)
31 : boot host directory (e.g. c:\)
Therefore to include the Autoexec.bat and Config.sys files the line Files=30,Autoexec.bat,Config.sys would be added to Scanreg.ini
ScanregVersion : This is self-explanatory.
The protected mode version of this program is ScanregW.exe found in the c:\windows directory. It can be used to backup and fix registries but it cannot be used to restore them.