How does the Win7 system release the U disk from write protection?

U disk is a very important device for storing file data, but U disk is easy to infect Trojan virus. Sometimes when U disk is formatted, it will appear “U disk is written to protect”. Formatting, what should I do at this time? The following gives you the operation of Win7 system to unlock the U disk.

Solution One:

First, our u disk format is FAT32, we first convert it to NTFS format.

Suppose your USB flash drive is on the computer with the H drive as an example:

1. Start Menu - Run - then type "ldd;cmd.exe" in the input box, then Press the Enter key and a black window will pop up!

2. then enter the command & ldquo in black inside the window; convert H: /fs: ntfs /nosecurity /x & rdquo ;, the input command and press Enter to execute the command!

Instructions: This method can only be used as emergency use. There may be write protection issues after restarting the computer, so we continue the second step and let the problem be completely solved!

This problem has been solved initially!

Second, change (u disk) disk strategy, this method can solve the problem that the u disk is written and protected after reboot!

1. Open my computer - find and select the u drive letter - click the right mouse button - properties, as shown below:

2. Open the u disk properties window, click <;Hardware" - “Properties", as shown below:

3. After popping up the hardware properties window, select Click “Strategy>, as shown below:

4. Change the policy to "Better Performance" (xp system is "optimized for performance" & rdquo;). As shown below:

Try it now? Has removed the u disk protection!

Solution 2

Solve the problem of the USB disk being protected by modifying the registry!

1, the Start menu - Run - and then in the input box: & ldquo; regedit.exe & rdquo ;, then press the Enter key, open the registry;

2. Open The registry will enter the directory of HKEY_LOCAL_MACHINE/SYSTEM/CurrentControlSet/Control/StorageDevicePolicies” one time later. If the “StorageDevicePolicies” item is not found, then we will create a new StorageDevicePolicies item. After

3. Create good StorageDevicePolicies item, and then the right side of the window to establish & ldquo; Dword value & rdquo; and renamed & ldquo; WriteProtect & rdquo; then its value to & ldquo; 0 & rdquo ;.

4. Restart the computer.

The above four steps are normal operations, but in actual operation, the above four steps may not solve the problem of write protection. For this problem, you need to do the following:

5. When we restart the computer, do not pull out the u disk, plug in the u disk to restart, and wait for the system to reboot until the u disk light flashes, pull out the u disk.

6. Finally, after the system reboots and enters the desktop, we insert the u disk again. The problem that the u disk is write protected is solved, and the u disk operation is also restored to normal!

Finally, we must remind you that in addition to modifying the registry, the other two methods can only solve the problem of U disk being written and protected at the same time, and it is not recommended to use the format conversion method to solve it. FAT32 converts NTFS format data without losing it, but converting NTFS format to FAT32 is cumbersome and can easily cause data loss.