Solution to file writing failure due to USB flash drive write Protection

In the past few days, some netizens have always said that "the USB flash drive is write-protected and files cannot be written ". Summarize the previous faults of the USB flash drive as follows:
1. Check whether the write protection switch on the USB flash drive is enabled. The switch works the same way as the floppy disk used in the past.
2. Check whether the number of files in the root directory of the USB flash drive reaches the maximum value. Generally, 256 files are used.
3. Right-click my computer and choose Properties> hardware> Device Manager> Universal Serial Bus Controller to check whether all projects in this item are normal, if any, update the driver.
4. After testing, we found that the USB flash drive can be used normally on another server, indicating that the fault is not on the USB flash drive, but on that server. In this case, operations such as formatting and formatting the USB flash drive will not work. Solution:
1. Start --> Run --> regedit --> OK to enter the registry.
2. Check HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet002 \ Control \ and
Whether the StorageDevicePolicies sub-item exists in HKEY_LOCAL_MACHINE \ SYSTEM \ ControlSet001 \ Control \, and whether the Sub-item has a WriteProtect value. If yes, change the value to 0 and go to step 1; if not, proceed to the next step.
3. View HKEY_LOCAL_MACHINE \ SYSTEM \ CurrentControlSet \ Control \ StorageDevicePolicies
If the StorageDevicePolicies option is not specified, the new item is created (right-click on Control> New --> item, and rename the new item
StorageDevicePolicies)
4. Create a New Dword Value in the right column and name it WriteProtect. The value is 0.
5. Reboot the computer and insert a USB flash drive. Normal.
 
By Xin Jing