GRUB

Boot into Single User Mode

  1. At grub boot screen (after restart)
  2. Select the kernel
  3. Press the e key to edit the entry
  4. Select second line (the line starting with the word kernel)
  5. Press the e key to edit kernel entry so that you can append single user mode
  6. Append the letter s (or word single) to the end of the (kernel) line
  7. Press ENTER key
  8. Now press the b key to boot the Linux kernel into single user mode
  9. When prompted give root password and you be allowed to login into single user mode.