At Sun, 3 Oct 2010 20:53:17 -0600 CentOS mailing list <centos at centos.org> wrote: > > I saw something somewhere about AHCI support requiring kernel 2.6.19 or later. > But the current CentOS/RHEL stable kernels are 2.6.18 Drivers, etc. are back ported. > > I'm trying to run CentOS/RHEL in a VirtualBox vm, which by default creates sata > virtual disks with an AHCI virtual controller. > > These virtual machines are quite unstable, and I'm wondering if the AHCI virtual > controller is the problem. > > I do have a real physical AHCI controller and I'm wondering if I > should try it on > a CentOS/RHEL 5.5 box, or if I should wait for RHEL/CentOS 6, before even > attempting it. I have a nVidia AHCI SATA controller on my system: 00:09.0 SATA controller: nVidia Corporation MCP78S [GeForce 8200] AHCI Controller (rev a2) And it works fine with CentOS 5. (It even works fine under CentOS 4.8!). I did have to add the 'irqpoll' kernel parameter. > -- Robert Heller -- Get the Deepwoods Software FireFox Toolbar! Deepwoods Software -- Linux Installation and Administration http://www.deepsoft.com/ -- Web Hosting, with CGI and Database heller at deepsoft.com -- Contract Programming: C/C++, Tcl/Tk