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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.
additional disk image formats can now be attached in Disk Drill: .raw, .dd and .img; extended disk health monitoring for I/O errors; new file signatures: EMF (Enhanced Windows Metafile), LNK (MS Windows Link), DPX (Cineon image file) 64-bit ready internal daemon (responsible for Recovery Vault, S.M.A.R.T. stats and Guaranteed Recovery) 2.2 ...
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]
When an optical disc is physically damaged (such as by scratching), or has begun to deteriorate, some parts of the data on the disc may become unreadable. By utilizing the ECC data previously generated by dvdisaster, damaged parts of the disc data can be recovered. The two modes of ECC data generation in dvdisaster make use of Reed–Solomon ...
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.
A CD drive can have extraction errors when the data on the disc is not readable due to scratches or smudges. The drive can compensate by supplying a "best guess" of what the missing data was, then supplying the missing data.
[8] UBCD includes a variety of disk partitioning, disk cloning, and antivirus utilities that were originally intended to run under Linux, and also includes a small Live CD Linux distribution (as of 2022, the freeware version of Parted Magic), which is used to run them. [8] The "Ultimate Windows Boot CD with ReactOS" is based on UBCD and ReactOS ...
For information about generic boot/recovery discs, see Recovery disc; A Microsoft Windows Emergency Repair Disk (ERD) is a specially formatted diskette that creates backups of important system files and settings and is used to troubleshoot and repair problems in Microsoft Windows NT and Windows 2000 systems. An ERD is used in conjunction with ...
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