The invention relates to data recovery technology. Each created backup is checked for the integrity of the placed files, while calculating the checksums of each block of data that can be restored from the backup. The computer system is restored from a backup copy by connecting it using the archive copy connection driver, which creates a virtual disk that is readable by standard means of the operating system of the computer system being restored. The booting of the operating system is performed from the virtual disk and, after restoring the functioning of the computer system, the system volume that has been damaged is restored from the backup copy to the local storage medium.