I have recently installed fedora 2 on a couple of machines, I can't remember what I've done when/if the option came up about power management but the ACPI module is there. I'd like to be able to put the computers to sleep when I go to sleep (the main reason is a whistling hard drive running all night). It seems I've got to set up grub accordingly. I've bought "Red Hat Fedora Linux 2 Bible" but there is not much in it about "grub' nor about "acpi/apm". Nothing on the net either.

Any suggestion most welcome.

This is a kernel append issue that appears on your grub kernel line. but the kernel translates it. so it is not translated by grub but by your kernel only AND you have to have a kernel that was either compiled with the needed support for it OR compiled for module support.

2) http://www.linuxquestions.org/questi...hreadid=237511
gives a simple kernel append line of ro for read only until fully booted.
kernel /boot/vmlinuz root=/dev/hda5 ro

3) So now have a look at your config kernel file in /boot and see if acpi or apm are Y or M
open file with a text editor and use the find function is quickest

If they are there, and you have not disabled them in your bios the next step is to check your modules have not been disabled, I don't have your distro so can't help but look into your /etc/rc.d/ boot up scripts mine is rc.modules

Thanks to AUS9.
Followed your suggestions, it looks like it's set up correctly including bios and should work. I'm a bit short of time now to investigate enough to allow a proper update of this post. I'll have to leave it for a few days and come back later.