It seems like you are facing an issue with restoring files from the backup created in Windows 7 Beta using the built-in utility to the RC build 7100. The problem you are encountering might be due to version incompatibility between the backup created in the Beta version and the restore utility in the RC build. Here are a few steps you can try to restore your old files: 1. Manual Restore: If the built-in restore utility is not recognizing the DVDs, you can try to manually access the data on the DVDs. You can copy the files from the DVDs to your hard drive and then retrieve the necessary files. 2. Third-Party Software: Use third-party backup and restore software that supports restoring files from Windows 7 Beta backups on a...