Jul 252013

When you were trying to open a folder or to cut/delete something in your USB drive or memory card on computer, have you ever encountered the pop-out window that says,”This disk is write-protected. Remove the write protection or get a new disk.”? Well, write protection is a common error occurs mostly due to immediate unplugging of the drive or memory card when the transfer is done or half-done. Though in some of the case it was caused by left the write protection switch on. Then how to fix this? How to remove the write protection? Here I provide some methods that might be helpful, read on.

Method 1. Remove Write Protection by Checking your Lock Switch.

Some USB drives or memory cards have the write protection switch now, which protects the drive from being formatted or written. In some cases, the reason why we encounter the write protection error is that we left the switch on the lock  position. So when the error pops up, just unplug the USB drive or memory card and check if it is locked. (There are other USB drive brands that are well-received, like HP USB drive. )

sd card write protectionIf it is indeed locked, switch it to the unlock position, then the write protection should be removed.  however, if your USB drive or memory card doesn’t have the lock switch or the error remains with the switch is off, it could have been the problem with the file system. Try the following method to remove the protection.

Method 2. Remove Write Protection by Modifying Registry Key

Hey, don’t be intimidated by the phrase “registry key”, it’s not as difficult as it sounds. Just follow the steps below, you will find removing write protection is pretty easy.

1. Press Windows+R to open run.exe, then type “regedit” to open Registry Editor.

2. Navigate to the following path:


3. Double click the WriteProtect, change the value from 1 to 0, and save the change.

change writeprotect

4. Close registry editor and reboot your PC, then your write-protected USB drive or memory card should be ready.

What If There is NO StorageDevicePolicies?

Some of you may find that there is no StorageDevicePolicies under the Control, then what to do? Then answer is simple, if there is no such a value, create one then.

1. Under the Control folder,  right click the white space, hit New->Key, and name the folder “StorageDevicePolicies”.


2. Double click to enter the new folder, then right click on the white space, hit New-> DWORD, name it “WriteProtect”.

3. Set the value data to 0, save the change and reboot your computer.

By this step, the write protection should be removed, if not. Let’s activate the great tool Command Prompt to kill it.

Method 3. Remove Write Protection By Using Command Prompt

The command we are using in this method is diskpart, some of you may think that command prompt is way to difficult, no worries, here is a clear and detailed guide for you.

1. Once again, press Windows+R to open run.exe, then type “cmd” this time.

2. When the command prompt pops out, type “diskpart” and enter.

3. Then type “list disk” and enter.

4. When the list of your disks shows up, figure out which one is your USB drive or memory card by its capacity, and type “select disk x(x being the number of your drive)”.

5. Then type attribute disk clear readonly. When it’s done, then the write protection should be removed.

remove write protection with diskpart

By now you should be able to cut and delete files on your USB drive. If still it’s not working, then there is no much thing we can do, it’s time to get a new USB drive or memory card.

Also, if your USB drive became writable and you accidentally deleted some files or formatted it, please use Card Data Recovery to recover the lost files.