lovers dig into the settings of the operating system Vindovs have encountered mention of the DEP.This is the English abbreviation formed from the words Data Execution Prevention, which in Russian means transcription DEP.For example, the settings in the "Group of Seven" can be easily found if the path to follow: "My Computer" - open the "Properties" - go to the "Advanced Settings" - now "Extras" and "Settings".A tab one - DEP.Here the user can select the operating mode function: use for some system services and programs or for all, except where indicated.However, disabling dep run away will not work, but more on that later.
Function DEP is integrated into Vindovs (since XP with the second service pack) software solution to prevent code execution from the data area (heap, stack).The mechanism of memory suggests that there are several areas that do not need to be executable code sections.Despite this, in the Linux kernel to 2.3.23 with and in Vindovs to SP2, no control over the placement of the program data in the system memory is not performed.Of course, except for the protection of the kernel directly.The vulnerability could not but take advantage of the creators of malware (viruses), resulting in a variety of steel is actively spread worms and exploits by receiving root access rights.In addition, many viruses cause a buffer overflow and crash the actual computer.
To prevent this protection mechanism has been implemented.At that time, no one even thought of how to disable dep, because it seemed a blessing.Developers processors quickly oriented and included hardware support of this function - it XD bit Pentium 4 and the sixth series at the NX bit Athlon 64. It is interesting that through proper marketing of the presence of this support was worth the extra money to the buyer.Currently, processors without XD (NX) there is no way, however, and operating systems.It is particularly noteworthy that even Android 4.1 adds support dep.More information about the features of this function can be in the global network.
If everything is so good, why sometimes wonder "how to disable dep»?The answer is simple - some programs are written without considering the peculiarities of the manager of system memory.Before "AD» DEP it had no fundamental significance, as the user needs to run the application it worked, and how it interacts with the system there - minor matters.Of course, it is a normal program and not a virus.
With the advent of the DEP Windows began to prohibit the execution of code incorrectly written programs.This is understandable, because the system does not know exactly what caused the strange behavior - a virus or a legitimate program.Only one way out - to find out how to turn off dep.By the way, at one time there were rumors persist that disabling this feature can improve performance of your computer.Some users claimed that since the check on the state of the memory pages, the CPU and the operating system consume a portion of their resources, knowing how to turn off dep, you can increase system performance.The basis of this assumption is correct, but the acceleration is within the error, so it can be ignored.
Yet if because of DEP have problems with the launch of any program, the function can be disabled.In "Seven" To do this, do the following:
- click combination Win + R;
- appeared in line recruit «bcdedit.exe / set {current} nx AlwaysOff» (without the quotes) and press Enter.
Important: The user must operate the system administrator.That is so simple.After this operation, the function will be disabled for all applications and services.
