Can't recognise second harddrive

From: Paul Smith (
Date: 12/03/03

Date: Wed, 03 Dec 2003 12:22:10 +0000

I am trying to setup an old PC to act as a Internnet connection sharing,
  file sharing, printer sharing, mail filtering and virus checking box
for a small home network.

I tried to install RH9.0 and Slackware 9.1 from CD both fail with Kernel
After some research I unplugged the second harddrive (hdc) and both CDs
boot and install OK.

So I have a system running Linux on a 1GB harddisk. And am unable to
use my second 6GB harddisk.

I have used the same system previously with Linux Mandrake 7.2, and can
still boot that system on the second disk from floppy. I think this
installation might use an old OnTrack DDO Manager to point to the hdc...
but I thought Linux worked independently of BIOS or bootloader drive
settings. Currently the BIOS/CMOS settings ignore the second hard drive.

I can now boot to either RH9.0 on hda using option hdc=noprobe, or to
Mandrake 7.2 on hdc using a boot floppy.

Can anyone suggest how to encourage RH9.0 to recognise the second hard disk?

I have tried specifying
linux hdc=13410,15,63 hdc=noremap linear lba32
and various combinations of these options, but the system still fails to
boot with a kernel panic. I have tried using LILO and GRUB, no
difference noticed.

Is there a better route to getting a patched, up to date system eg could
I go back to my old working Mandrake 7.2 installation and update/patch
it in some way? The Mandrake ftp sites say 7.2 no longer supported....