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It can be used to create/remove Host Protected Area (HPA) (using command SET MAX) and create/remove DCO hidden area (using command DCO MODIFY). It also can do other functions on the DCO. Data Synergy's freeware ATATool utility can be used to detect a DCO from a Windows environment. Recent versions allow a DCO to be created, removed or frozen.
A Replay Protected Memory Block (RPMB) is provided as a means for a system to store data to the specific memory area in an authenticated and replay protected manner and can only be read and written via successfully authenticated read and write accesses. The data may be overwritten by the host but can never be erased.
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.
The bootloaders of Nexus and Pixel devices can be unlocked by using the fastboot command fastboot oem unlock or if it doesn't recognize the command fastboot flashing unlock. [ 9 ] When Motorola released a bootloader unlocking tool for the Droid Razr, Verizon removed the tool from their models.
There are potential weaknesses in the implementation of the protocol between the dongle and the copy-controlled software. For example, a simple implementation might define a function to check for the dongle's presence, returning "true" or "false" accordingly, but the dongle requirement can be easily circumvented by modifying the software to always answer "true".
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).
Using the lockfile command (a conditional semaphore-file creator distributed in the procmail package). System calls that create a file, but fail if the file already exists. (System calls are available from languages such as C or C++, and shell scripts can make use of noclobber) Using the mkdir command and checking the exit code for failure [11]
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.