This article describes the Microsoft .
You can use the to create a backup
of your system configuration and registry files in case a problem should
This utility is located on the Windows 95 CD-ROM in the Other\Misc\ERU
Backing Up Your Configuration
To create a backup of your system configuration files, double-click the
Eru.exe file and follow the instructions on the screen.
You will need to choose a location for storing the backup information. By
default, the information is stored on a floppy disk in drive A. However,
you can choose to store the backup information in another location, such a
local hard disk or a mapped network drive. The files that are backed up by
Note that the User.dat file that is backed up is the User.dat file in the
Windows folder. The User.dat file in the Windows\Profiles\<username>
folder is not backed up by default.
If you want to back up only certain files, click the Custom button in the
file list screen. You can choose to back up only the files you want.
Restoring Your Configuration
To restore the backup information, start your computer at a command prompt
and then run Erd.exe. If you do not want to restore all the files, press
SPACEBAR to select or deselect files. Note that you cannot run Erd.exe
within Windows 95. You must run this utility at a command prompt. If you
saved your backup information to a network drive, you must be able to
access the network drive at the MS-DOS level.
To start your computer at a command prompt, restart your computer, press
the F8 key when you see the "Starting Windows 95" message, and then choose
Command Prompt Only from the Startup menu. Then, change to the floppy
drive or directory containing the backup information and run Erd.exe.
Microsoft recommends that you use the Emergency Recovery Utility to create
a new backup each time you make significant changes to your system, such
as adding new hardware or software.
For information about a potential problem backing up files with the
Emergency Recovery Utility, please see the following article in the
Microsoft Knowledge Base:
Emergency Recovery Utility Does Not Back Up Files
Note that the Emergency Recovery Utility cannot back up all the
configuration files if there is not enough room on the destination disk.
If there is not enough room on the destination disk, the Emergency
Recovery Utility backs up as many files as will fit, skipping the largest
files first. For example, the Emergency Recovery Utility usually cannot
back up the registry files (System.dat and User.dat) if you try to back up
the configuration files to your Windows 95 Startup disk.