Can I erase old kernals?

surfduke · 03-09-2005, 07:49 PM

Bonehead 101 questions from a noober!

Quote:

#boot=/dev/hda
default=6
timeout=20
splashimage=(hd0,6)/grub/splash.xpm.gz
#hiddenmenu
title Fedora Core (2.6.10-1.770_FC3)
root (hd0,6)
kernel /vmlinuz-2.6.10-1.770_FC3 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.10-1.770_FC3.img
title Fedora Core (2.6.10-1.770_FC3smp)
root (hd0,6)
kernel /vmlinuz-2.6.10-1.770_FC3smp ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.10-1.770_FC3smp.img
title Fedora Core (2.6.10-1.766_FC3)
root (hd0,6)
kernel /vmlinuz-2.6.10-1.766_FC3 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.10-1.766_FC3.img
title Fedora Core (2.6.10-1.766_FC3smp)
root (hd0,6)
kernel /vmlinuz-2.6.10-1.766_FC3smp ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.10-1.766_FC3smp.img
title Fedora Core (2.6.9-1.667smp)
root (hd0,6)
kernel /vmlinuz-2.6.9-1.667smp ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.9-1.667smp.img
title Fedora Core-up (2.6.9-1.667)
root (hd0,6)
kernel /vmlinuz-2.6.9-1.667 ro root=/dev/VolGroup00/LogVol00 rhgb quiet
initrd /initrd-2.6.9-1.667.img
title winXP
rootnoverify (hd0,0)
chainloader +1

Can I erase all the old kerrnals? How do I do it?

Also, what's the the "smp" stand for? Why does one kernal line show it and not another. Thanks for the help

Pudge · 03-09-2005, 08:09 PM

in a terminal window, as root

Code:

# rpm -q kernel
kernel-2.6.10-1.667_FC3
kernel-2.6.10-1.770_FC3

This lists all versions of the kernel on your system

Code:

# rpm -e kernel-2.6.10-1.667_FC3

Removes the old kernel from your system, cleans up grub.conf and removes lib files for that kernel. The kernel-2.6.10-1.667_FC has to be exactly as listed in the rpm -q kernel listing. Best to use copy/paste for that.

type in

Code:

#man rpm

to see what the -q and -e parameters do in the rpm command.

SMP refers to Symmetric Multiple Processors. SMP kernels are for mother boards with dual processors. You shouldn't have a mix of smp and regular kernels. You should have one or the other, not both.

Pudge

surfduke · 03-09-2005, 08:26 PM

Worked great Pudge! Thanks for the lesson... I appreciate it!!!

Why do I have a mix of smp and regular listed?

Cheers!

Pudge · 03-09-2005, 08:35 PM

Quote:

Originally posted by surfduke
Why do I have a mix of smp and regular listed?

If we were playing Who Wants To Be a Millionare? that would be the million dollar question.

I have no idea, that should never have happened.

Pudge

misc · 03-10-2005, 03:48 PM

Quote:

Why do I have a mix of smp and regular listed?

Because either your system is a multi-processor system or you started with an SMP kernel installed. It's normal to have both kernel versions for SMP systems.

surfduke · 03-10-2005, 05:43 PM

Quote:

Because either your system is a multi-processor system or you started with an SMP kernel installed. It's normal to have both kernel versions for SMP systems.

I do not have a multi-processor system. I have an ASUS P4P800 With an Intel 2.4 800FSB, 1 ghz pc3500, the system is overclocked to 3.01 ghz.

That's it! Nothing fancy. The FC3 install was normal.

misc · 03-10-2005, 06:04 PM

Hyperthreading also requires an SMP kernel

Pudge · 03-10-2005, 06:31 PM

Quote:

Originally posted by misc
It's normal to have both kernel versions for SMP systems.

Quote:

Originally posted by misc
Hyperthreading also requires an SMP kernel

I din't know that. They say you learn something everyday, I just got my Quota for today.

Pudge

surfduke · 03-10-2005, 07:06 PM

Great lesson! Thanks Guys!!!

tormented_one · 03-10-2005, 08:04 PM

Also another good command is: yum clean