Remove Write Protection from external Hard disk

Hi All,

Sometimes you face the problem that when you try to remove few files or directories from your external hard-disk, it says that if you want to modify it, please remove write protection from external hard disk. So here is the simple solution, I also found it on some discussion forum.
Step 1. Start -> Run -> regedit.exe
Step 2. Go to
Computer\HKEY_LOCAL_MACHINE\System\CurrentControlSet\Contro l\StorageDevicePolicies
If StorageDevicePolicies is not there then create a new key. 
Step 3. Now Click on StorageDevicePolicies and on the right-hand side there should be a DWORD value labelled "WriteProtect".
Step 4. Do the same with the following two locations (creating any non-existent keys/values along the way):
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet002\Control

I hope this will help.