hi,

I have two lan cards installed on my pc, but i use only one and the other one remain unpluged.The problem which I am facing is that boot process takes 2 or 3 minutes while acquiring IP address (DHCP) and results with "FAILED"

Is there any way to configure my system to skip one lan card at startup? or disable it...

as a dumb person i would suggest that you take the second lan card out of your computer and put it back only when you need it again.

then again, you might be able to use some tool fedora provides to disable the network card. one particular graphical tool, called "network" comes to my mind. it exists in redhat 9, so maybe fedora has it, too.

thanks

actually i want to use different mac addresses on each OS. (is it useful if i want to show different mac address on each Os by disabling 2nd network card?)

If you're running redhat or fedora, system-config-network will let you disable a NIC, or at the very least disable DHCP, although I think it will make you set a static address once you turn off DHCP.

If you don't have this utility you can usually do it all manually

edit the file
/etc/sysconfig/network-scripts/ifcfg-eth0 (or 1 or 2, etc)

To disable the nic, add/change the line to say ONBOOT=no

That will prevent the nic from starting at boot. You can adjust several settings there, but I'd recommend using the sys-cfg-network tool I mentioned above to make your changes.