Currently no restore points are available when you use Windows Vista, Windows 7 or Windows Server 2008-based operating systems in a dual-boot configuration with an earlier Windows operating system.
The problem occurs when you start the computer by using an earlier operating system version such as Windows XP or Windows Server 2003. Booting an earlier operating system deletes the restore points that were created by Windows 7. The earlier operating system also deletes all complete PC Backup files except for the most recent version.
Use Portlock Leap Frog to setup a native VHD dual-boot environment.
With Windows XP or Windows Server 2003 installed on the host system, Portlock Leap Frog will assist in creating and managing a Windows 7 or Windows Server 2008 R2 VHD for native Windows deployment.
The deletion of restore points in Windows 7 will not be an issue when booting back into Windows XP or Windows Server 2003.
To create a restore point in Windows 7, open the Start Menu and right-click on Computer and then select Properties.
In the left-hand side of the dialog box, select System protection. This will open the System Protection tab displayed below.
To manually create a restore point, highlight the desired drive and select Create. The available drives below consist of the Local Disk (D:), which is Windows XP, and the MSVHD (C:), which is the Windows 7 VHD.
Notice how protection is enabled for both available drives. When protection is enabled for both drives, Windows 7 can only create one restore point for each drive. Disable protection from one of the drives to allow Windows to create unlimited restore points.
By selecting the Configure button you can turn off the system protection for any available drive.