Various data recovery programs exist on the market that claim to undelete deleted files and repair corrupted hard disks. But do these recovery programs live up to the expectations, or do they come short of their claims? This article analyzes modern data recovery programs and describes certain data recovery algorithms used in those recovery programs.
Modern file recovery programs have come a long way since the early days of data recovery. Unlike the legacy disk recovery programs such as checkdisk, modern recovery programs concentrate on user data instead of prioritizing the recovery of the corrupted system structures. Many recovery programs employ sophisticated recovery algorithms that allow reliable recovery of files in the most difficult conditions.
Disk Recovery Wizard marketed by Wizard Recovery offers several proprietary technologies to recover files and data from disks that have been reformatted, repartitioned, or are severely damaged. PowerSearch empowers this recovery program by enabling users to recover more than 150 types of lost and deleted files even if the disk is inaccessible from Windows. PowerSearch performs a complete low-level scan of the entire surface of the affected hard drive in order to correctly identify files by their type, locate the beginning and end of each file, and perform the recovery. Unlike competing technologies, PowerSearch makes use of the file system if it is still present on the disk in order to obtain additional information about the recoverable files.
LivePreview, another proprietary technique used in Disk Recovery Wizard that does not appear in competing data recovery programs, displays full previews of recoverable files without writing data onto the disk being repaired. The technology supports more than 150 types of files, and is completely safe to use on even severely corrupted disks. LivePreview works in both free and full versions of Disk Recovery Wizard.
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