Booting a live ISO without mounting the hard drive ?

[Joao Daniel]

On 10/14/2011 01:12 PM, linux guy wrote:
> I'm on the road, in the middle of nowhere.
>
> I've got a hard drive issue.
>
> I'd like to run the f15 Live ISO from a USB drive.  No problem there.
>
> I DO NOT want it to mount the hard drive.   i'd like it unmounted so
> that I can perform disk tests and stuff on it.
>
> I know about rescue disks.  I don't have enough bandwidth to download one.
>
> How do i run a Live ISO so that it doesn't mount the hard drive ?
>
> Thanks
You could press a (if you using grub) then u should pass some parameters 
to kernel. Google and you will find.