How to lock my drives??

How to lock my drives, Hide my drives, Hide my folders,Protect my drives etc etc…. I have searched a lot for these queries  . No one has provided exact information. Many softwares are available which can lock drives folders and protect your personal information and prevent unauthorized access.  None of those softwares are for free. Each and every company is demanding minimum of 50$ for each software.

lock all my drives

Well i am having a nice trick which can lock all your system drives and folders and protects your personal information.
Following steps will clearly explains you How to lock all your drives:

Goto Run and type “regedit” without quotes.
Then goto the following location and make a new dword value namd NoViewOnDrives.
[HKEY_LOCAL_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
Now set its value to
1 for A:
2 for B:
4 for c:
8 for D:
in decimal format
and set it to 03ffffff to lock all drives in hexadecimal format.

Or else

Go to Run and type gpedit.msc
its short for group policy edit….
now go to the administrative templates (the lower most option)
now on left select option system
now find the option hide drives in my computer.
And there u can do it more simply