Several solutions of "U disk is written protection"

U disk inserted in the computer always appear "U Disk is write protection" error, but the U disk clearly did not write protection switch, what is the reason? Here are a few solutions:

A. Modify the registration Form

1, open the registry Win+r (that is, start-run) type Regedit.exe

2, enter the following directory Hkey_local_machinesystemcurrentcontrolsetcontrolstoragedevicepolicies

If there is no storagedevicepolicies item, this item is established

3, establish a DWORD value named Writeprotect and make its value is 0

4, restart can be

Second, My Computer (right click)-Management-Disk Management-Select U disk right click to delete the formatting.

If none of the above methods work, try the following methods:

Convert u disk from FAT32 format to NTFS format.

If your USB drive in the computer is the L: Disk for example

1, Win+r input cmd.exe (is to start dos,windows inside) can also be attached to the command prompt;

2, the use of the Convert command, note that the convert command can not be converted to the current disk so in L: any letter outside the operation, where the D: Disk directory for example;

3, enter the following command convert L:/fs:ntfs/nosecurity/x