How to wipeout your hard disk perfectly in Ubuntu

Here is a command shread which can be used to in bash terminal of Ubuntu to wipeout your harddisk completely without leaving any chances for further recovery. Please dont try it unless otherwise you dont have no other use with your current system...

$ shread -v -n 1 -z /dev/hda

Options

-f, --force
       change permissions to allow writing if necessary

       -n, --iterations=N
       Overwrite N times instead of the default (25)

       -s, --size=N
       shred this many bytes (suffixes like K, M, G accepted)

       -u, --remove
       truncate and remove file after overwriting

       -v, --verbose
       show progress

       -x, --exact
       do not round file sizes up to the next full block;

       this is the default for non-regular files

       -z, --zero
       add a final overwrite with zeros to hide shredding

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How to hide a hard disk drive in Windows

Through this hack you can disable the display of local or networked drives when you open My Computer

To Do this Follow The Steps

1

Open the run dialog box from the start menu.

Open Registry editor by typing regedit in the run dialog box.

2

HKEY_CURRENT_USER\Software\Microsoft\Windows\
 

3

Now in the right pane create a new DWORD item and name it NoDrives (it is 

case sensitive).
 

4

Now modify its value and set it to 3FFFFFF (Hexadecimal).
 

5

Now restart your computer.
 

Now when you click on My Computer, no drives will be shown.

To enable display of drives in My Computer, simply delete this DWORD item that you created. Restart the computer to see the changes happened.
  

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