I'm trying to have a working RH AS 4.0 installation on a Lenovo 8212-1QG and Iím having trouble with the SATA ICH7 controller.
I first did a good working install on the Lenovo after what i realized with hdparm that DMA couldn't be enabled on it, and data transfers were very slow.
A good clue for me to find would have been to realize during the installation process that the sata drive was handle as /dev/hda by the dev file system
I tried with some other livecd (gentoo 2006.0) to check, if it wasnít a red hat issue and after some looking, I found I should have enabled some option in the computer bios.
Enabling that option will make the drive fully functional with gentoo(dma enabled, 50MB/S read rate) but now the drive is invisible for the red hat installer, i tried to load manually the kernel modules working under gentoo (libata/piixata), but still, it cant find my drive.
I than tried to install RH 4.2/4.3, getting a kernel panic on installation boot, "solved" by disabling Hyperthreading in bios. And so is finally well recognize my drive o.o"
Anyway, my problem is, Iím able to make it working under 4.2/4.3 environment, I need to install 4.0 on that pc, only supported environment to host the Websphere Application Server 6.0.
I can't reach the red hat web support, and I was wondering, having already running servers on that station, is there a way to patch it to make it work, or maybe upgrading the kernel package without losing data, or any other idea?