You may add the boot option to the configuration file of the boot loader. Assuming you're using Grub, the default boot loader, you have to edit the file /boot/grub/menu.lst. Be careful in doing this: first make a backup of the existing menu.lst somewhere, e.g. as root
Code:
cp -p /boot/grub/menu.lst /root/menu.lst.backup
then you can edit the file /boot/grub/menu.lst adding acpi=off to the kernel line. For example (I will show this just for example purposes, please don't copy anything from the following)
Code:
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Fedora Core (2.6.20-1.2962.fc6)
root (hd0,0)
kernel /vmlinuz-2.6.20-1.2962.fc6 ro root=LABEL=/ rhgb quiet
initrd /initrd-2.6.20-1.2962.fc6.img
title Fedora Core (2.6.20-1.2948.fc6)
root (hd0,0)
kernel /vmlinuz-2.6.20-1.2948.fc6 ro root=LABEL=/ rhgb quiet
initrd /initrd-2.6.20-1.2948.fc6.img
You will have something similar to the above example. You can simply add acpi=off at the end of the lines in red. Indeed these lines instruct the boot loader about the kernel to load and the options to pass at boot time. I do not mean to frighten you with my warnings, but since you've told you're new on linux, when you manage something about the boot process the prudence is never too much!
