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Write blocking, a subset of write protection, is a technique used in computer forensics in order to maintain the integrity of data storage devices. By preventing all write operations to the device, e.g. a hard drive , it can be ensured that the device remains unaltered by data recovery methods.
Device configuration overlay (DCO) is a hidden area on many of today's hard disk drives (HDDs). Usually when information is stored in either the DCO or host protected area (HPA), it is not accessible by the BIOS (or UEFI), OS, or the user.
Analog Protection System Adds pulses to analog video signals to negatively impact the AGC circuit of a recording device so the images on copied DVDs become garbled. Sony ARccOS Protection Inserting corrupted sectors in areas where normal players will not access but ripping software does to trigger errors during replication. Burst Cutting Area
CD/DVD copy protection is a blanket term for various methods of copy protection for CDs and DVDs. Such methods include DRM, CD-checks, Dummy Files, illegal tables of contents, over-sizing or over-burning the CD, physical errors and bad sectors. Many protection schemes rely on breaking compliance with CD and DVD standards, leading to playback ...
A portable Tableau write-blocker attached to a hard drive Example of a portable disk imaging device A Tableau forensic write blocker A Tableau forensic disk imager A forensic disk controller or hardware write-block device is a specialized type of computer hard disk controller made for the purpose of gaining read-only access to computer hard ...
Protected-mode Virtual Interrupts: If set, enables support for the virtual interrupt flag (VIF) in protected mode. 2: TSD: Time Stamp Disable: If set, RDTSC instruction can only be executed when in ring 0, otherwise RDTSC can be used at any privilege level. 3: DE: Debugging Extensions: If set, enables debug register based breaks on I/O space ...
Write once read many (WORM) describes a data storage device in which information, once written, cannot be modified. This write protection affords the assurance that the data cannot be tampered with once it is written to the device, excluding the possibility of data loss from human error, computer bugs, or malware.
The data returned gives information about the drive attached to the controller. There are three ATA commands involved in creating and using a host protected area. The commands are: IDENTIFY DEVICE; SET MAX ADDRESS; READ NATIVE MAX ADDRESS; Operating systems use the IDENTIFY DEVICE command to find out the addressable space of a hard drive.