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On Windows NT operating systems, CHKDSK can also check the disk surface for bad sectors and mark them (in MS-DOS 6.x and Windows 9x, this is a task done by Microsoft ScanDisk). The Windows Server version of CHKDSK is RAID-aware and can fully recover data in bad sectors of a disk in a RAID-1 or RAID-5 array if other disks in the set are intact. [11]
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.
Disk Wipe: Irrecoverably erases data from hard disk Computer Management: A group of utilities that help retrieve system information, enable, disable or manage device drivers, Windows services and software that run during computer startup, inspect the event logs of the offline system and manage partitions.
Disk First Aid is a very simple tool, with it only being able to detect and repair directory damage [3] and many books are critical of its sometimes inaccurate reporting of errors, and often suggest to run the tool more than once to ensure a consistent result. [3] [4] [5] Disk First Aid is located in Applications:Utilities:Disk First Aid. [4]
Restoring volumes from Apple Software Restore (ASR) images; Checking the S.M.A.R.T. status of a hard disk; Disk Utility functions may also be accessed from the macOS command line with the diskutil and hdiutil commands. [3] It is also possible to create and manage RAM disk images by using hdiutil and diskutil in terminal. [4]
DMDE (DM Disk Editor and Data Recovery Software) is a data recovery and disk editing tool for hard drives and other storage media. It can work with physical devices, logical disks, disk images, as well as RAID-arrays and recovers files that have been accidentally deleted or lost due to other incidents. [1] [2] DMDE is available in various editions.
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.
In systems prior to OS X El Capitan, a permissions repair can be performed by selecting a startup volume and clicking the "Repair Disk Permissions" button in the "First Aid" section of Disk Utility. The operation can also be performed by using the diskutil command-line utility. [ 6 ]