1. Connect the USB flash drive to the computer, right-click on the desktop to open "Computer" and select "Manage".
2. In the computer management window, click "Storage-Disk Management", and you can see the U disk we need to operate on the right.
3. Right-click the USB flash drive and select Format.
4. Click "OK" in the pop-up prompt box to start execution.
5. After the formatting is completed, the U disk can generally be restored to its original size.
The above is the operation method of completely formatting the U disk. When using a USB flash drive, you can transfer important information first, and then press and hold the method provided above to recover.
U disk, full name of USB flash drive, English name of USB flash drive. It is a miniature high-capacity mobile storage product, which uses USB interface and does not need physical drive. Connect with computer through USB interface to realize plug and play. The name of USB flash drive comes from a new storage device produced by Netac Technology, which is called "USB flash drive" and is connected by USB interface. After the USB flash drive is connected to the USB interface of the computer, the data of the USB flash drive can be exchanged with the computer. Later, because Netac has registered a patent, the equipment with similar technology was renamed as "USB flash drive" instead of "USB flash drive". Later, the name U disk was widely known because it was easy to remember, and it was one of the mobile storage devices.
Generally, the capacities of USB flash drives are 1G, 2G, 4G, 8G, 16G, 32G, 64G, etc. (and 32M backup mini version). Take the most common 4G to 8G as an example, you can buy them around 30 yuan. At present, the capacity of USB flash drives has been greatly improved, such as 4G and 16G USB flash drives. It is easy to carry. We can hang it on our chests, on key chains, or even in our wallets. Now USB flash drive can replace CD-ROM drive as a new system installation tool.
In the USB specification, it is divided into five parts, namely controller, controller driver, USB chip driver, USB device and client device driver for different devices.
Host controller: This is a physical chip, which is mainly responsible for executing the commands issued by the controller driver. At present, almost all controllers are integrated in the south bridge chip of the motherboard, and users do not need to buy them separately.
Host controller driver: establish communication link between USB and controller.
USB chip driver: provides support for USB.
USB device: USB peripheral devices connected to a PC, including USB hubs and devices. The former can be connected with other USB devices, and the latter is a specific device for completing specific functions.
Client driver: a driver used to drive USB devices, usually provided by USB device manufacturers or operating systems.
The computer converts the binary digital signal into a composite binary digital signal (adding instructions such as allocation, check and stack) and reads it into the USB chip adapter interface. The chip processing signal is distributed to the corresponding address of EPROM2 memory chip to store binary data, thus realizing data storage. The control principle of EPROM2 data storage is that the voltage controls the voltage of the gate transistor, and the junction capacitance of the gate transistor can store the voltage value for a long time, which is why USB can store data after power failure. Can only be explained in such a simple and popular way.
Application mode
U disk has a USB interface and is a USB device. If the operating system is Windows 2000 or above or Apple system, the system will automatically identify the USB flash drive by inserting it directly into the USB interface on the front panel or the back of the chassis. If the system is 98, you need to install a USB flash drive to use it. You can find the driver on the attached CD or the manufacturer's website.
When using the USB flash drive for the first time, the system will report the discovery of new hardware. After a while, you will be prompted that the new hardware has been installed and can be used (frequently inserted USB flash drives are not prompted). Open "My Computer" and you will see an additional icon named "Removable Disk". After this step, if you use a USB flash drive in the future, you can directly open "My Computer". At this point, notice that a small icon will appear in the lower right corner of the screen, indicating a USB device. U disk is one of USB devices. Next, you can save and delete the files on the USB flash drive as usual. However, it should be noted that after using the USB flash drive, close all windows, especially those about the USB flash drive. Right-click the USB device icon in the lower right corner before correctly unplugging the USB flash drive, then left-click "Remove Hardware Safely", press the "Stop" button, and then click "OK" in the pop-up window. When the prompt "You can safely remove the drive now" appears in the lower right corner, you can unplug the USB flash drive from the chassis.