Shutdown hangs at: "ACPI_power_off_called".

[Darren Critchley]

Matt Zimmerman wrote:
<SNIP>

>>>Try booting with (each individually) "noapic", "pci=noacpi", "acpi=off" and
>>>see if any of those help.
>>>      
>>>
>>What file do I need to edit?
>>    
>>
>
>When your system is booting, press ESCAPE at the countdown, press 'e' to
>edit the command line, move to the line which says 'kernel', press 'e' to
>edit it, add the parameters to the end, press enter, then press 'b' to boot.
>
>  
>

acpi=force worked great for me when inserted in the above manner, it 
even got the batter icon working properly for my laptop.

Now the million dollar question, how do I make the change permanent, I 
do not want to have to edit grub every time I boot.
I cannot seem to find a grub.conf either, where is it located?

Thanks
Darren