29/05/2015
How To Format A Write Protected USB Flash Drive
Remove Write Protection With Diskpart Command Line Utility
Click on your Start Menu and type cmd in the Search for programs and files field.
It should show up at the top of your Start menu. Right-click on it and select Run as Administrator.
Now type LIST DISK and hit Enter.
You should see a table something like the one below. It shows two disks being available: the Hard Disk Drive (HDD) as Disk 0, and the USB flash drive as Disk 1.
We know that the USB flash drive is Disk 1 because it is much smaller than Disk 0 at only 7441 MB versus 298 GB. Be very careful from here on out! You can see that if you start working with the wrong disk, things can get ugly quicker than when the lights come on at last call.
At this point, type SELECT DISK 1 and hit Enter. You’ll be rewarded with the knowledge that Disk 1 is now the selected disk. Type in ATTRIBUTES DISK, and Diskpart will tell you what you want to know about your flash drive. Most important is the first line Current Read-only State: Yes. This lets us know that, indeed, the flash drive is write protected.
To remove the write protection with Diskpart, type the command ATTRIBUTES DISK CLEAR READONLY. If it works, that will be confirmed by the line Disk attributes cleared successfully.
completed-diskpart-remove-readonly
Double-check this by trying to copy a small file to your USB drive. If it works, great. If you still get the write-protect error, it’s time to bring out the big guns. Software utilities.
