Start the computer

This is the operation of each computer users have to face. By starting the computer's operating system normal operation, the user can interact with the computer to complete the mission.

Why do we need to start computer? I summed up, to the following three reasons:

PC is closely related to the user's life, when the user to rest, to save energy, for safety, will usually turn off the computer, then open the next time. To boot the computer from the shutdown, it is necessary to start, called the restart. Of course, now the computer support standby, you can not shut down, so a little a little fee, but the next time you use do not have to restart.
Operating system encountered a problem and can not work properly, you must reboot, such as Windows blue screen. After previous computer continuous operation for some time, will encounter a variety of problems, we had to restart. Now, however, the operating system is probably more mature, with more computer memory, so spend a month in a row does not restart, no problem.
Operating system has been updated, in order to allow the update to take effect, you must restart.

Thus, although we are now starting frequency computer significantly reduced than before, but still inevitable to start the computer.

Type the computer starts

Computer's startup divided into two types: local and remote boot start.

Remote start means the start of the relevant files on the network, this approach is suitable for diskless computer network use, we usually do not use.

Local start is commonly used to start the way we started the relevant files in the machine's memory, it can be divided into the machine (hard disk) to start and peripherals (U disk) to start two types.

The computer starts the process

Computer's startup process is divided into two processes: BIOS and OS boot start.

BIOS (Basic Input Output System) is a start relatively simple process, mainly to complete the inspection and loading computer hardware. After the BIOS startup is complete, it will be referred to OS boot to complete the boot process.

After the OS (operating system) boot is complete, users can use the resources of the computer.

Start the computer in various ways

Legacy and UEFI BIOS startup divided in two ways. Legacy is a traditional BIOS boot, is relatively simple, can be understood as ancient DOS mode; UEFI is to improve the way that can be understood as an updated Windows way.

The current general computer support Legacy and UEFI mode, but there are also some older computers only support Legacy mode, there are some new computers only support UEFI mode.

用于启动的OS的种类同样有很多，我们常用的操作系统有PE、Windows以及Linux三大类。