Boot whith previus Kernel

[Alejandro Cóceres]

I install a patch, & dont boot again, how i can to boot whit previus kernel?.

regards

Ale

[S.K. Chan]

In boot admin prompt ..
BOOT_ADMIN > bo pri isl
and then in ISL prompt ..
ISL > hpux -is (;0)/stand/vmunix.prev

That should bring you up in single user mode. Ignore the "-is" option if you want to go to multi user mode. I assume you know then how to recover "reverse" back your kernel at this point.

[Uday_S_Ankolekar]

After turning on the system, when the message "Press escape to stop boot
sequence" is displayed, press the "escape" key to get into the PDC (Product
Dependant Code). A list of available commands will be displayed with
the "BOOT_ADMIN>" prompt.

- Type "bo pri isl" and [return] to get to the "isl" command
prompt "ISL>".

- Boot from desired kernel.

To boot normally from the previous kernel, type:
"hpux (;0)/stand/vmunix.prev" and [return].

To boot in "single user" mode from the previous kernel, type:
"hpux -is (;0)/stand/vmunix.prev" and [return].

To boot in "lvm maintenance" mode from the previous kernel,
type "hpux -lm (;0)/stand/vmunix.prev" and [return].

Note : To boot from an other previously backed up kernel, replace the kernel
file name "vmunix.prev" with the file name of the kernel to boot.

Goodluck
-USA..