Removing write-protection in the Registry using Regedit.exe
In any version of Windows from XP onwards, run Regedit.exe (searching
regedit will usually show the program at the top of the list).
Navigate to the following key:
Computer\HKEY_LOCAL_MACHINE\SYSTEM\
CurrentControlSet\Control\StorageDevicePolicies
Double-click on the WriteProtect value in the right-hand pane of
Regedit.exe. Change the Value data from 1 to 0 and click OK to save the
change. Close Regedit and restart your computer. Connect your USB drive
again, and you should find it is no longer write protected. You can now
format the drive as normal by right-clicking on it in My Computer and
choosing Format.
If you can’t find StorageDevicePolicies, you can try creating a key
by right-clicking in the white space in the Control folder and choosing
New -> Key and carefully entering the name.
Now double-click on the new key (folder) and right-click once again
and choose New -> DWORD. Name it WriteProtect and set its value to 0.
Click OK, exit Regedit and reboot your computer.
If this method doesn’t work, try the following:
Removing write-protection using Diskpart
With your USB drive plugged in, launch a command prompt. Do this by
searching for cmd.exe in the Start menu (or Start screen in Windows 8).
In Windows XP, click Start then Run, and type cmd.exe in the box.
NOTE: you may need to run Cmd.exe with administrator privileges if you see an “access is denied” message.
To do that, right-click on the shortcut and choose Run as administrator. In Windows 8, simply choose Command prompt (admin).
Now, type the following, pressing Enter after each command:
diskpart
list disk
select disk x (where x is the number of your USB flash drive – use the capacity to work out which one it is)
attributes disk clear readonly
clean
create partition primary
format fs=fat32 (you can swap fat32 for ntfs if you only need to use the drive with Windows computers)
exit
