Reposted from: Micro reading https://www.weidianyuedu.com
Introduction : I believe that many people use mobile storage devices, such as hard disks, after they are plugged into the computer, they suddenly cannot be copied, prompting that the disk is write-protected, please remove the write-protection or use another disk. Figure 1 may be depressed for a long time at this time, the U disk is clearly a few days ago
I believe that many people use mobile storage devices, such as hard disks, which suddenly cannot be copied after they are plugged into the computer. It prompts that the disk is write-protected. Please remove the write protection or use another disk. USB home
At this time, I may have been depressed for a long time. The U disk was fine a few days ago, so how could it suddenly become unusable? Is it a virus? Or is it broken? Use anti-virus software to check and kill the whole body, but nothing comes out, so as to rule out signs of poisoning. Could it be that the U disk is physically damaged?
In fact, this is a special "write protection" of the U disk, not the traditional method of using the write protection button on the U disk, but a new method. The USB device introduces a security feature that allows users to add "write protection" to the flash drive to prevent modification of the contents of the USB drive.
The method is very simple: expand in turn in the registry editor
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control], then create a new subkey named "StorageDevicePolicies" in the "control" item, and create a new dword value named "WriteProtect" under this subkey, and set its value to Set to 1 (hexadecimal). Exit Registry Editor to take effect.
In this way, when others want to modify the data in the U disk on our computer, a warning window will pop up to inform that the U disk is write-protected.
Based on this write protection principle, we can easily remove the write restriction on the flash drive, that is, change the value of "WriteProtect" to 0.