HOW TO BREAK THE PASSWORD
Ø Restart the system and press enter when counting is start for coming on the choosing option mode. :-
Ø press e :- after that options interface are coming.
Ø Select the line in which last word are vmlinuz then press e and then write 1 after the last of the line. And press b for booting the system. After that login as root and then write exit. After that system will automatically restart and run on the default mode.
Ø Vmlinuz is the name of kernel.
Kernel communicate with the hardware and shell return the answer to the user.