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May 12, 2021 • Filed to: USB Recovery • Proven solutions

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How do I remove write protection from a SanDisk flash drive?

Hello all, I got a message reading 'The disk is write-protected' whenever I inserted my SanDisk pen drive to my computer. I was unable to disable the write protection on my flash drive. Can anyone help me? Thanks.

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What Is a Read-Only Flash Drive?

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Once you get similar messages like the following ones when using the SanDisk flash drive, it means the pen drive becomes read-only and write-protected. You're unable to edit data, delete files, or save information on this drive, unless you find the fixes.

The common error of 'The disk is write-protected' will occur when you trying to format an external disk such as (USB flash drive, SD memory card, or pen drive).
If you start to copy or modify the files on the drive, the pop-up window show you 'The disk is write-protected. Remove this write-protection or use another disk'.
A read-only flash drive won't allow you to copy the file. When you want to do that, a message might appear - 'You cannot copy files to the volume'.

Why Is My USB Drive Read Only?

Formating the file system of the flash drive can cause the write protection. Usually, a pen drive uses the NTFS file system on a Windows computer. You can keep writing and reading data stored inside it. However, sometimes you might want to use it on a Mac computer. So you format the flash memory stick to make it compatible with the Mac computer. The file system is indeed readable and the stored data is accessible on a Mac computer due to the Mac feature. However, writing data is not available. The write protection is added on the USB flash drive by default.

How do I disable write protection on a flash drive? Here, we offer both Windows and Mac solutions to help you fix write-protected flash drives easily and quickly.

How to Remove Write Protection from USB Flash Drive on Windows

How do I remove write protection from a USB drive in Windows 10?

If your USB disk gets this error on Windows computer, you may think the USB drive is broken and unable to use. The flash drive becomes a read-only situation, and you cannot manage data on it, like copying, deleting or writing the files on the disk. How to remove the write protection from a read-only flash drive? On the next guide, we will show you how to disable write protection from flash drive, SD card or pen drive in Windows 10/8/7.

Video tutorial: How to Fix 'The Disk is Write Protected' Error? | Remove Write Protection

Solution 1: Diskpart Command

Step 1. Connect your flash drive to the computer, and launch a command prompt by searching for cmd.exe or 'Command Prompt' in the Start menu.
Step 2. Type the following and press Enter after each command: diskpart, list disk, select disk #(# means the name of your write-protected disk), attributes disk clear readonly, clean, create partition primary, format fs=ntfs.

Step 3. Exit the Command Prompt.

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After this, your USB flash drive should now work well. If it doesn't work, you can also follow the next steps to fix write-protected USB drive with Regedit.exe.

Solution 2: Regedit.exe

Step 1. Press key of Windows Key + R and type regedit in Run dislog box and Enter.
Step 2. On the pop-up window Registry Editor, go to the HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlStorageDevicePolicies.

Step 3. Double click the WriteProtect value in the right pane.
Step 4. You can change the value data from 1 to 0, then click OK to save the change, and close the Regedit window.
Step 5. Restart your computer and connect the USB drive to it. Check if the drive is working well and no longer write-protected. If it isn't read-only now, you can continue using the USB flash drive.

Solution 3: Open Windows Explorer

Step 1. Plug in the write-protected disk.
Step 2. Press 'Windows+E' and right-click on the drive.
Step 3. By right-clicking on the disk, you can choose 'Properties', and then select 'Security'.

Step 4. To Edit the permissions, you should now select 'Everyone' from 'Group or user names'.
Step 5. Select 'Edit' and go to 'Permissions'
Step 6. Check all the boxes labeled as 'Allow'

Step 7. Click 'Apply' and exit. Your disk's write protection has now been removed.

Solution 4. Check and Unlock USB Flash Drive

Check the switch on the drive: some external USB flash drives and pen drives have a mechanical switch which is used to lock or unlock the drive. If your drive gets the switch, check whether the switch is locked or not. If yes, move it.
You also can check the USB flash drive if it got the virus-infected and attacked. You need to download anti-virus software and scan your flash drive. Once the virus is found, and kill it at once to remove write protection from a read-only flash drive.

How to Remove Write Protection from USB Pen Drive on Mac

If you're working on a Mac computer, you also will receive the 'Read Only' error on the external drive. On the following steps, we will show you how to disable write protection disk on Mac.

Solution 1: Format Write-Protected Pen Drive on Mac

To disable the write-protected disk on Mac, you can follow the next steps to format the drive on macOS:

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Step 1. Open the Disk Utility, and the application window will open.
Step 2. Click on your USB flash drive on the left pane of Disk Utility.
Step 3. Click on the Erase tab, then select the format type. Select either 'MS-DOS File System' or 'exFAT' both working well on Windows and Mac.
Step 4. Then click on the '