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TestDisk is a free and open-source data recovery utility that helps users recover lost partitions or repair corrupted filesystems. [1] TestDisk can collect detailed information about a corrupted drive, which can then be sent to a technician for further analysis.
The software is designed to find, test, diagnose and repair hard disk drives, reveal problems, display health and avoid failures by using S.M.A.R.T. (Self-Monitoring, Analysis and Reporting Technology) function of hard disk drives. [34] [35] [36] The detected information can be saved to file in formats such as HTML, text, or XML. [37] [38] [39]
The most common data recovery scenarios involve an operating system failure, malfunction of a storage device, logical failure of storage devices, accidental damage or deletion, etc. (typically, on a single-drive, single-partition, single-OS system), in which case the ultimate goal is simply to copy all important files from the damaged media to another new drive.
Logical errors are typically defined as software-level problems with a filesystem (or its metadata) as a result of prior software malfunction (e.g. crashes) or irregular use (e.g. hard resets). Logical errors are contrasted with and usually less severe than hardware-level errors, which can not be fixed with CHKDSK and may instead require data ...
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It was introduced in 2010, [2] and is primarily designed to recover deleted or lost files from hard disk drives, USB flash drives and SSD drives with the help of Recovery Vault [3] technology. While Disk Drill was originally exclusive to the Mac, a Windows version was released in 2015. [4]
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Hard disk reader. A bad sector in computing is a disk sector on a disk storage unit that is unreadable. Upon taking damage, all information stored on that sector is lost. When a bad sector is found and marked, the operating system like Windows or Linux will skip it in the future.
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