Windows XP one second shutdown hazard

                  Hazard of quick shutdown

There is a quick shutdown method that is circulated on the Internet: call up the task manager, hold down the Ctrl key, and click to shut down, so that it can be turned off in three seconds, and the speed is very fast. In addition, there are some fast shutdown software, such as SuperFast Shutdown, which can also be used to quickly shut down.

we all know, to conduct a series of operating system shutdown, including: close the window, end the process and services, save data and so on. And does the quick shutdown like the above save some steps, and will this harm the system?

take a look at what steps to shut down normally experience:

① shutdown command to inform Windows subsystem CSRSS.EXE, CSRSS.EXE, after receiving the notice and will make a Winlogon.EXE Data exchange, and then Winlogon.EXE informs CSRSS.EXE to start the process of shutting down the system.

②CSRSS.EXE in order to query the user process has top-level window, so that these user process exits.

③ then began to terminate system processes.

a period of more than three steps throughout the Windows shutdown process is the most time-consuming, most of the reasons for the slow shut down because of these three steps caused.

④Winlogon.EXE call NtShutdownSystem () function to execute system commands back off the work, and finally shut down.

Windows shutdown process seems quite complex. Using the Ctrl key to shut down or using some fast shutdown software does not go through the full four-step process, but often skips the first three steps and directly calls the NtShutdownSystem() function to shut down.

Many software writes data to memory at runtime and saves it to a file when it exits. If you do not go through the previous steps, it will lead to the program not exiting normally and losing data. This may cause some unexpected errors due to important data loss, which is harmful to the system.

So here suggest that you try not to use the Ctrl key or shut down some fast shutdown software, after all, data security is more important than the point of shutdown time savings.