<div class="gmail_quote">On Tue, Apr 5, 2011 at 2:34 PM, Lamar Owen <<a href="mailto:lowen@pari.edu">lowen@pari.edu</a>> wrote: <blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"> RHEL 6 uses a different set of drivers for certain IDE/ATA chips, and apparently certain chips aren't properly supported any more in recent kernels. I'm thinking specifically of Intel 845 and 865 (I think; I'm sure of the 845), like used in Dell Dimension 4500S desktops. Fedora 14, 13, and 12 won't install on them either; older (pre-all ATA uses libata) works fine. Same error you see there. The CD-ROM is initially booted as a BIOS device, but once control passes from the initramfs to anaconda the access to the device goes through other channels, and for some reason those chips have issues with the new ATA stack. At least our Dell Dimension 4500S's have issues there; I wanted to use a Fedora liveCD to do a disk clone on one, and it would not boot at all; had to back up to an older version of SystemRescueCD (1.1.0; current is quite a bit more modern). So, try a number of LiveCD's and work up to where it quits working (use Fedora LiveCD's for consistency); start at FC6 and work your way up, and find out where it quites working. Need more info on your devices to help further. </blockquote></div> Our chipset is 82801 and 82901EB. The Intel motherboard is S875WP1-E It is about 5 years old, but it isn't unusual for us to run hardware that long and have it used for 2 or 3 purposes in its lifetime. I've checked on the <a href="http://redhat.com">redhat.com</a> certified list, but these items don't show up. Does it list anything not supported, or is omission the only way to know it isn't supported? --Donald