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You cannot access certain folders, such as Program Files, Documents and Settings, and disks or folders containing other Windows XP Professional installations. You cannot copy files to removable disks because floppy-disk write access is disabled by default. When you attempt to copy files to removable disks, an error message similar to the following appears: Access is denied. You cannot change the local Administrator account password from Recovery Console. You do not have access to a text-editing tool in Recovery Console.

You can customize Recovery Console to bypass the first and second restrictions, by using the SET command to modify environment variables. Windows XP Professional uses environment variables to associate string values, such as folder or file paths, to variables that applications and the operating system can use. For example, by using environment variables, scripts can run without modification on computers that have different configurations. For more information about environment variables, see To add or change the values of environment variables in Windows XP Professional Help and Support Center.

Figure 9-5.

You can use the Recovery Console set command to display or modify the following four Recovery Console environment variables. AllowWildCards Setting the value of this variable to TRUE allows you to use wildcard characters (* and ) with some commands. For example, typing dir *.txt lists all files in the current directory with the .txt file name extension to the screen. AllowAllPaths Setting the value of this variable to TRUE allows you to expand the scope of the change directory cd command to include all folders on all disks. AllowRemovableMedia Setting the value of this variable to TRUE allows you to copy files from the hard disk to removable disk media. NoCopyPrompt Setting the value of this variable to TRUE allows you to copy files without being prompted to continue when overwriting an existing file. To change the value of the preceding variables from the default value of FALSE to TRUE, use the following syntax:

set variable = [TRUE|FALSE]

When you first attempt to use the set command to change the value of environment variables from FALSE to TRUE, an error message similar to the following appears:

9

The SET command is currently disabled. The SET command is an optional Recovery Console comma nd that can only be enabled by using the Security Configuration and Analysis snap-in.

Appendix C:

To enable the set command, enable the Allow floppy copy and access to all drives and all folders Group Policy setting by using the Group Policy snap-in. To enable use of the set command by using the Group Policy snap-in 1. Restart Windows XP Professional in normal mode. 2. In the Run dialog box, type gpedit.msc. 3. In the console tree, expand Local Computer Policy, and then expand Computer Configuration, Windows Settings, Security Settings, and Local Policies. 4. Click Security Options. 5. Double-click Recovery Console: Allow floppy copy and access to all drives and all folders, click Enabled, and then click OK. In an Active Directory based network, to enable set command functionality for all computers, set Group Policy on a domain controller. Setting up policy from a central location is more efficient than applying settings for each computer. You can also use the Group Policy snap-in to enable the policy Recovery Console: Allow automatic administrative logon, which allows you to bypass the logon process when Recovery Console starts. Activating this policy eliminates a security barrier intended to protect your computer against unauthorized users. Therefore, it is important that you enable this policy only on systems that have secure consoles, such as those in locked rooms. You can also make Group Policy changes by using the Security Configuration and Analysis snap-in. For more information about Group Policy, see 17, Managing Authorization and Access Control, 1, Planning Deployments, and 5, Managing Desktops. Also, see the Distributed Systems Guide of the Microsoft Windows 2000 Server Resource Kit and the Change and Configuration Management Deployment Guide link on the Web Resources page at http://www.microsoft.com/windows/reskits/webresources.