Search results
Results from the WOW.Com Content Network
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.
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 ...
Protection may encompass all accesses to a specified area of memory, write accesses, or attempts to execute the contents of the area. An attempt to access unauthorized [a] memory results in a hardware fault, e.g., a segmentation fault, storage violation exception, generally causing abnormal termination of the offending process.
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.
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.
When a disk's controller executes a physical read, the actuator moves the read/write head to (or near to) the correct cylinder. After some settling and possibly fine-actuating the read head begins to pick up track data, and all is left to do is wait until platter rotation brings the requested data.
Enhanced Write Filter (or EWF) is a component of Windows XP Embedded and Windows Embedded Standard 7 which stores volume changes on another medium instead of applying them to the original volume. [1] EWF allows the writes to be discarded or committed to the original volume later (either directly or through inaction based on the configuration).