How to format a write protected usb flash disk

Click start 
then run regedit

 










go to this directory HKEY_LOCAL_MACHINE\SYSTEM\Currentcontrolset\control\ 
if you can't find StorageDevicePolicies under control folder 
then make some new one. Follow this steps: 

 

step 1: 
go to this directory HKEY_LOCAL_MACHINE\SYSTEM\Currentcontrolset\control\ 
again and right click control folder 

step 2: 
select new, then click key and rename the new key #1 folder into 
StorageDevicePolicies 

step 3: 
right click StorageDevicePolicies folder and select new DWORD(32-bit) Value 
for 32-bit Operating System and select new DWORD(64-bit) Value 
for 64-bit Operating System 

step 4: 
rename dword newer folder into WriteProtect, then double click WriteProtect 
and change the value data into 0 with hexadecimal base, Then close regedit 

step 5: 
open my computer and refresh it 5 times without do anything to your usb, and 
properly eject your flash drive 

step 6: 
plug in your usb again into your computer and format it using exfat instead of fat32 

Now, you can use your USB drive again....