How do I boot to single-user mode


From power-up:

Type '#' to cancel boot and get you to the console prompt.

	Probe Hardware Configuration
	Generate Address Map
	Reset Backplane
	Initialize Interrupts
	Set Run Mode
	   CPU 0   CPU 1
	Type '#' to cancel boot
	#0>  <----------- console prompt


From the console prompt:

Once at the console prompt type "p boot."  This shows the value of the
boot register.

	#0>p boot.00000080 
	#0>

If the 2 bit is set in the boot register the system will boot to single
user mode.  To change it type "p boot <value>." where value is the the
old boot register OR'ed with 2.

	#0>p boot 82.00000080
	#0>

To verify it type "p boot." again.
	
	#0>p boot.00000082 

To boot the kernel type "fb.".

	#0>fb.
	Reset Backplane
	Initialize Interrupts
	Set Run Mode
	   CPU 0   CPU 1
	dsk(0,1,0,0)/.
	dsk(0,1,0,0)/boot
	PowerMAX OS Boot Loader
	Boot
	: /stand/unix
	3049296+388487+1360229 start 0xE000
	symbol table loaded
	...

	INIT: :option: boot to single user mode.

	INIT: :SINGLE USER MODE

	Type Ctrl-d to proceed with normal startup,
	(or give root password for Single User Mode): 

Type in root's password to enter single mode.

	Type Ctrl-d to proceed with normal startup,
	(or give root password for Single User Mode): 
	Entering Single User Mode

	# 

Now you are in single user mode.


For more information see the appropriate Console Reference Manual for your
architecture.