If you were once using older Windows version like Windows XP and ided to purchase a newer computer system (desktop or laptop), it is all the time a good perform to backup the entire your files for protection. Once you have created Windows backup data through NTBackup utility in your older Windows, you can then use it in the new computer and install & use Windows 7. After that, you are attempting to restore Windows backup file through Windows NT Backup Restore Utility for Windows 7, but unfortunately, you are unable to do that, because you have received an error message "backup file contains unrecognized data" during restoration process. In such situation, you need to repair Windows backup file through third-party software like BKF recovery software. Through this application, you can fix Windows error as well as restore older Windows backup file to Windows 8.1, 8 and 7.
If you are a computer user and you are facing difficulty for that type of query - "How to Restore BKF Files XP to Windows 7", But it is quite convinced if once it happens in your backup database then you cannot restore XP BKF data it without using any other third party Windows BKF recovery application.
Unable to Catalog BKF File: Catalog files are very useful as they restore XP BKF file from the desktop/laptop backup files/folders. Most of the times you may be unable to catolog BKF file from NTBackup or VERITAS Backup utility with the help of BKF file recovery process. While, missing catalog files can lead to damage induced in the application.