It is well known that Windows 7 has very low hardware requirements for computers, not only far below the vista system, but some users even find that installing Windows 7 requires less hardware than Windows XP. So many netbook users also want to install Windows 7 on their own machines. In fact, Windows 7 can also run smoothly on a low-profile netbook, but some netbook users are depressed because they can't install Windows 7 without a DVD drive. In fact, you don't have to be frustrated, because we can still install Windows 7 without a DVD drive. We only need a 4GB USB flash drive. After testing, installing Windows 7 using a USB flash drive is faster than using a DVD drive. Don't worry! The following small series will slowly tell you the installation method: 1. First we need to find a 4GB U disk and plug it into the netbook. 2. Open the “Start Menu” in the lower left corner of the screen, then run the “cmd” command, and you will see a control window pop up. 3. Then type the following in the window: * First type ‘diskpart’ command; * ‘list disk’: Type the command and the system will automatically list all the disks found on the computer, including the U disk we just plugged in. . * At this point you can see the number corresponding to the USB flash drive (such as #), then type: ‘select disk #’; * Then type ‘clean’; * type ‘create partition primary’; * then enter &lsquo ;select partition 1’; * Enter ‘active’; * Enter ‘format fs=fat32 quick’. The whole operation steps can refer to the following figure: Here you can copy the Windows 7 installation files to the USB flash drive, and then you need to install the Windows 7 ISO file as a virtual DVD. It is very simple, you can follow the following Steps to achieve: 1. First install a free software MagicDisc, which is used to create and manage virtual CD-ROM, of course, if you know that other such software can also choose other, here we use this free software. 2. After the MagicDisc installation is completed, it will appear in the system tray. At this point, right click on MagicDisc and select ‘Virtual CD/DVD-Rom’ to set up the DVD drive. 3. Then click ‘Mount& rsquo; will bring up a dialog window for you to select the Windows 7 ISO image file. 4. In Windows Explorer, open all the Windows 7 installation files by opening the DVD drive you just set up. All you need to do is copy and paste all these files into the USB flash drive, so you have a Windows 7 installed U disk. As long as you install the Windows system yourself, you're basically done here. Whether you want to install Windows 7 on any of your own computers, you can plug in the Windows 7 installation and you don't need a DVD drive. Yes, Xiao Bian also reminds you that when using this U disk to install Windows 7 system, don't forget to enter the BIOS after rebooting the computer to change the system's preferred boot device to a USB external device! ^-^