# poweroff

'e'dit  
navigate to second grub.conf line (kernel)
'e'dit the second line of the 'grub' bootloader to 
 append  <SPACE> 1  (" 1") to the end of the line
or 
 append  <SPACE> S  (" S") to the end of the line
or
 append "single" to ro root=LABEL=/ single
enter 
'b'oot

# passwd

# poweroff