Easy to get a U disk can not copy write protection

Remember that there was a write-protect switch on the floppy disk? When you turn it off, the computer can only read the data in the floppy disk and can't modify any of the deleted files. Of course, it is not afraid that the files in the floppy disk are infected with viruses. Infected or accidentally deleted. If you are using a mobile storage device, such as a USB flash drive or a mobile hard disk, you may not be able to copy the USB flash drive or the mobile hard disk after plugging it into the computer. The disk is protected by write protection. Please remove the write protection or use another one. This thorny issue with disks.

At this time, you may be depressed for a long time. U disk is still good a few days ago. How could it suddenly be used? Is it a virus? Or is it broken? Use anti-virus software to kill all but kill Kill something out and rule out signs of poisoning. Is it really a physical damage to the U disk?

In fact, this is a special type of U disk "write protection", not the traditional way to write a protection button on the U disk, but a kind of new method. Windows XP SP2 introduces a security feature for USB devices that allows users to add “write protection to the flash drive to prevent modification of the contents of the USB flash drive.

is simple: In the Registry Editor, expand [HKEY_LOCAL_MACHINE \\ SYSTEM \\ CurrentControlSet \\ Control], followed by the & ldquo; control & rdquo; entry in the new one called & ldquo; StorageDevicePolicies & rdquo; children And create a new dword value named "WriteProtect" under this subkey, and set its value to 1 (hexadecimal). Exit the Registry Editor to take effect.

In this way, when someone wants to modify the data in the USB flash drive on our computer, a warning window will pop up to inform the USB flash drive that it has been write protected.

Based on this write protection principle, we can easily remove the write limit on the flash disk, that is, the value of "WriteProtect" is changed to 0.