What to do after installing a new motherboard?
 

Running CentOS 6.4 x86_64

My old mobo was acting flaky, so I installed a new one. I am using a different model mother. My old mobo was a Biostar A780LG3, my new one is a Gigabyte 78LMT-USB3. Both use the same AMD Phenom II CPU.

Everything works, but I suspect there may be some problems with the config files, regarding MAC address of eth0, and so on.

Also, I don't know if I am using the best video drivers.

Should I try to do a non-destructive re-install, or something?

If eth0 is still eth0, there's no problem.

If you want to install manufacturer drivers for your graphics card, feel free.

Don't know what "and so on" is supposed to imply.

Looks to me like the system is now using eth1 instead of eth0. I am not sure why. Maybe it's because of previous config files?

As to the "and so on" I am afraid that several of the configuration settings might not be accurate anymore, since the config files were originally created for different video, audio, usb, sata, and network, adapters. I am afraid this might cause sub-optimal performance, or might cause things not to work at all.

I am trying to install KVM, and I am not certain that some of the config files match up with my actual hardware.

A re-install would be a lot of work, especially if had to re-install all my packages. I would like to avoid that, if it is practical to do so.

I do not know the CentOS internals well enough to know if CentOS will re-configure itself correctly, or if I have to do all that manually, or if I should re-install.

Biostar A780LG3- 760G/SB710 chipset.
http://www.biostar.com.tw/app/en/mb/...?S_ID=479#spec

Gigabyte 78LMT-USB3- 760G/SB710 chipset.
http://www.gigabyte.com/products/pro...px?pid=4305#sp

Video, SATA and USB are the same between both models.

Network might be different (gigabyte doesnt list the Realtek LAN chip version), audio will be different.

It is because udev still remembers your old network device. Delete the file /etc/udev/rules.d/70-persistent-net.rules, after a reboot your network card will be seen as eth0. Other hardware specific config files should not be present, so that you shouldn't have problems with that. I never had.

How can USB be the same? The Gigabyte has USB 3.

The USB 3.0 controller is an addon chip and as its like you added a USB 3.0 card to your pervious motherboard. The USB 2.0 ports which are provided by the SB710 southbridge should be unchanged.

I did that, but my /etc/sysconfig/network-scripts/ifcfg-eth0 has a different hardware address than what I get when I do an ifconfig. Anyway to know which is the real MAC address?