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Supported wipe methods Reports BleachBit: Andrew Ziem and contributors GNU General Public License: Windows, Linux: Yes external [1] on screen, Copy and Paste-able CCleaner: Piriform: Trialware: Windows, OS X: Yes external [2]? Darik's Boot and Nuke (DBAN) Darik Horn GNU General Public License: OS independent, based on Linux: No external [3]? dd ...
The Gutmann method is an algorithm for securely erasing the contents of computer hard disk drives, such as files.Devised by Peter Gutmann and Colin Plumb and presented in the paper Secure Deletion of Data from Magnetic and Solid-State Memory in July 1996, it involved writing a series of 35 patterns over the region to be erased.
According to the University of California, San Diego Center for Magnetic Recording Research's (now its Center for Memory and Recording Research) "Tutorial on Disk Drive Data Sanitization" (p. 8): "Secure erase does a single on-track erasure of the data on the disk drive. The U.S. National Security Agency published an Information Assurance ...
A block, a contiguous number of bytes, is the minimum unit of storage that is read from and written to a disk by a disk driver.The earliest disk drives had fixed block sizes (e.g. the IBM 350 disk storage unit (of the late 1950s) block size was 100 six-bit characters) but starting with the 1301 [8] IBM marketed subsystems that featured variable block sizes: a particular track could have blocks ...
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.
Seagate started shipping device-managed SMR hard drives in September 2013, stating an increase in overall capacity of about 25% compared to non-shingled storage. [1] [11] In September 2014, HGST announced a 10 TB drive filled with helium that uses host-managed shingled magnetic recording, [12] although in December 2015 it followed this with a 10 TB helium-filled drive that uses conventional ...
Thus, with LIMDOW the magneto-optical write process has a single stage, improving write times. Because the magnetic surface is adjacent to the writing surface, rather than somewhere outside the disk itself, the magnetic writing can be done at a higher resolution, including that of the resolution of the laser spot doing the heating up.
9-track tape is a format for magnetic-tape data storage, introduced with the IBM System/360 in 1964. The 1 ⁄ 2 inch (12.7 mm) wide magnetic tape media and reels have the same size as the earlier IBM 7-track format it replaced, but the new format has eight data tracks and one parity track for a total of nine