You should be able to edit the grub line even for the LiveCD.
At the beginning of the boot there's a keyboard symbol on the screen, if you 
press any key you get a boot menu.
There is an option there to edit boot params (F6 or so, iirc).
All you need to do is add lapic to the boot line.

I am not sure it's a good idea adding lapic for all PC's, this is only 
usefull for older machines without SMP I think.

Regards,
Alex

----- Original Message ----- 
From: "Mark Wendt" <mark.we...@nrl.navy.mil>
To: "Enhanced Machine Controller (EMC)" <emc-users@lists.sourceforge.net>
Sent: Wednesday, September 15, 2010 12:35 PM
Subject: Re: [Emc-users] Fwd: [EMC Support Forum Forum] Re:10.04 live cd no 
Realtime (Installing EMC)


> Alex,
>
>     That works once you've installed the OS and EMC2.  I had the
> problem running it from the live CD, with no way of adding qualifiers to
> the boot.  Perhaps on the next release, or update that could be added as
> a default to the /etc/default/grub file?  Or will that break other 
> installs?
>
> Mark
>
> On 09/14/2010 04:10 PM, Alex Joni wrote:
>> It's not APIC, but LAPIC (Local APIC) that's the troublesome thingie.
>> There are some (older?) BIOS'es that apparently don't enable it by 
>> default,
>> so the user has to enable lapic at boot time (kernel param).
>>
>> There have been quite a few messages how to fix this.
>> But here it goes again:
>>
>> in /etc/default/grub, change
>>
>> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
>>
>> to
>>
>> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash lapic"
>>
>> and then run update-grub and reboot
>>
>> This only works if your system _does_ have an LAPIC.
>> If you get the error message:
>> [ 0.080250] Local APIC not detected. Using dummy APIC emulation.
>> then you are out of luck, and you need a non-SMP RTAI install (hardy 8.04
>> for example).
>>
>> Regards,
>> Alex
>
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