Hi,
I have fedora 3 on my comp. Everytime i see the Red Hat network alert icon turn red, i update my computer either by the update wizard or by GYUM but i noticed that whenever I update the kernel, GRUB just add one more line into my startup file, so after a number of time updating kernel, I get a lot of kernel in my GRUB option. Does the update relly update (remove old kernel and install new one) my kernel of just install an additional one? If it update, why I still have a bunch of kenel options when i boot my computer? If it just install new kernel and the old ones still exist, how can I remove it?

The package programs like up2date, yum and apt-get do not automatically remove a kernel. The safest way to remove old kernels is to use the GUI tool called synaptic. You can edit the /boot/grub/grub.conf to remove those old kernel lines.

I usually do,

$rpm -qa | grep -i kernel
A list of installed kernels will show up and just remove the old kernel by doing
#rpm -e kernel-version

Does synaptic work on fedora? After i read the readme file of synaptic, i am confused since it says that i have to config it in order to make it work wit other distributions but Debian!!!

Is it safe to do that? Do I have to do other configuration after i remove some old kernel?
Thanks for helping

Yep, synaptic works quite well on Fedora and it doesn't require any configing. If it's not already installed, as root user, run the command: yum install synaptic
Atter synaptic is installed, run it as root user
Select: Reload
Select: Mark All Upgrades
Select: Smart Upgrade
Note: the smart upgrade is best as it doesn't try to install a bunch of stuff which is not already installed, just upgrades what is installed.

This is strange, why I cant find synaptic bu GYUM but I can install from YUM?? I though GYUM and YUM find package on the same package server and GYUM is just a GUI of YUM.

I cant install synaptic this way, i receive the following error:

yum install synaptic
Setting up Install Process
Setting up Repo: base
http://ftp.uni-koeln.de/fedora/3/i38...ta/repomd.xml: [Errno 4] IOError: <urlopen error (111, 'Connection refused')>
Trying other mirror.
repomd.xml 100% |=========================| 1.1 kB 00:00
Setting up Repo: updates-released
repomd.xml 100% |=========================| 951 B 00:00
Reading repository metadata in from local files
base : ################################################## 2622/2622
updates-re: ################################################## 506/506
No Match for argument synaptic
Nothing to do

Please help

Well then try the command: yum install apt
Then the command: apt-get install synaptic

Yes it's safe to do that as long as your bootloader is configured to use the new kernel, which I think Fedora does automatically.

Sorry, but i receive the same error when i tried to install apt:
yum install apt
Setting up Install Process
Setting up Repo: base
repomd.xml 100% |=========================| 1.1 kB 00:00
Setting up Repo: updates-released
http://fedora-mirror.dkuug.dk/linux/...ta/repomd.xml: [Errno 4] IOError: HTTP Error 404: Not Found
Trying other mirror.
repomd.xml 100% |=========================| 951 B 00:00
Reading repository metadata in from local files
base : ################################################## 2622/2622
updates-re: ################################################## 506/506
No Match for argument apt
Nothing to do

You can get apt and synaptic from freshrpms. Choose the versions for the distro you are currently running. You may need to searhc on the web for more documentation about apt on Fedora and how to add repositories, etc.

Thanks do much for your help! Finally I can install synaptic to remove my old kernel!!!

You are welcome