This article describes the command-line switches you can use when you run
the MS-DOS version (Scanreg.exe) or the Windows version (Scanregw.exe) of
the Registry Checker tool.
Scanreg.exe [/backup] [/restore] ["/comment=<text>"] [/fix]
Scanreg.exe [backup] [/restore] ["/comment=<text>"] [/fix] [/opt]
Scanregw.exe [/backup] ["/comment=<text>"] [/autoscan] [/scanonly]
Description of Switches
The following table lists each command-line switch and its description:
/backup Backs up the registry and related files without
displaying any prompts.
/restore Displays a list of available backup files, sorted
by the date and time the backup was created.
"/comment=<text>" Enables you to add a descriptive comment to the
/fix Repairs any damaged portions of the registry, and
optimizes it by rebuilding it without unused space.
/autoscan Automatically scans the registry and backs it up
without displaying any prompts if there is no
backup for that date.
/scanonly Scans the registry and displays a message if any
errors are found. This switch does not back up the
filename Scans the registry file specified and displays a
message indicating whether or not any errors were
found. This switch does not back up the registry.
/opt The /opt command-line switch causes the
Registry Checker tool to optimize the
registry by removing unused space.
The Registry Scan Results dialog box appears only when you use the
Scanregw.exe command without any command-line switches. If no registry
errors are found when you run Scanregw.exe, you are prompted to create a
backup copy of your current registry.
The "/comment=<text>" switch can be used by itself or with the /backup
switch. For example, you can type either of the following lines at a
scanreg.exe "/comment=this is a registry backup"
scanreg.exe /backup "/comment=this is a registry backup"
The first command line starts the Registry Checker tool graphical user
interface (GUI) and prompts you to create a registry backup. The second
command line creates a backup copy of your registry and adds your comment
without starting the Registry Checker tool GUI.
For additional information about the Registry Checker tool, please see the
following articles in the Microsoft Knowledge Base:
Description of the Windows Registry Checker Tool (Scanreg.exe)
How to Customize Registry Checker Tool Settings
Error Message: You Have Restored a Good Registry
For additional information about how to use the Registry Checker tool,
click Start, click Help, click the Index tab, type registry
and then double-click the "Registry Checker" topic.
for other considerations.