What is the difference between a USB flash drive CD ROM with a system installed and a system witho

Let's talk about indirect "system knowledge" first, there is basically no "CD-ROM" system now, for 1Limitations,You can't install it without an optical drive (now whether it's an assembly machine,Or an ultrabook,There is basically no optical drive)2.The capacity is small, and now the USB disk installation system also needs to be repaired, tested, and special-purpose software occupies a lot of capacity.

Let's get down to business, let's talk about the benefits and uses of the transfer system:

Upgrading: Other netizens also said that they should change to a new system and add new functions and a new system interface experience. Having said that, if the computer is relatively old, it is not recommended that you change to a new system, which may cause problems such as compatibility, crash, and poor operation.

There is no absolute standard, and I recommend that the computer be changed to a new system for about 3 years.

Dealing with exceptions: The increase in your time with the computer, there will be some files that assist you to see all the browsing content automatically ** to the C disk (C is the system disk, generally** software can not be put on the C disk, and the system will be affected by the response speed for a long time). Sometimes browsing the web and accidentally clicking on some small **auto** something on your computer, either causing abnormal operation or personal information leakage.

There are times when so-called "viruses" damage your system, and antivirus software may be able to clear it, but it may not be able to fix the system abnormality. The easiest way to do this is to "reinstall the system".

Maintenance detection: The system will be equipped with some maintenance and detection software (such as common detection: memory, hard disk) in the system, so that you can find and solve the problem.

Hard disk partition: He also belongs to software, the main thing is to divide the block hard disk into several copies (c d e f a disk to calculate a copy, generally divided into 4 parts, up to 8 parts), there is also a clear hard disk storage data function (you can be clear in the whole disk, you can also choose a disk to clear, you can open my computer yourself can also choose a disk, right-click to format and clear data, but the efficiency is very low, it only takes more than ten seconds to use this software), it is formatting. Generally, it is clear that the data and the reinstallation system are carried out at the same time (echoing the above 2 questions), who knows whether it is a problem with the C disk system, or the abnormality of other disks, all cleared, in one step.

6.Generally, the reinstallation system does not have to be installed with the latest, and the XP system is generally installed (the old machine and the new machine are all installed).

Windows system for a long time slow response,After reinstalling the system, the computer will respond faster than before the system is not reinstalled,Now the win system has win7 and win8 new systems,After installation, the computer can experience the new system。

One of the ways to reinstall the computer system without a CD-ROM or USB flash drive:

DOS system.

Installing a DOS system is very simple and complicated how to start a DOS system. Nowadays, there are many DOS toolboxes on the Internet (such as Dwarf DOS Toolbox, MaxDOS Toolbox, etc.), which can be installed on the hard disk in the Windows system, and you can choose whether to enter the Windows or DOS system when you boot the computer.

After entering the DOS system, switch the drive letter to the folder where the best system image is located, such as the system image in the folder named "win" on the D drive (note, use WinRar to extract the system image to this folder in advance in the Windows system). The steps for this step are to first enter the command d:

Then press enter, at this time the drive letter is d: > and then enter cdwin (note that there is a space after cd), at this time the drive letter is d: win>, then enter winnt, press enter, and then start the installation.