How to boot when changing Bios SATA-IDE to SATA-AHCI

[Michael P. Carel]

Hi to all;

Can anyone help me on how can I change my bootloader when changing Server Bios from  SATA-IDE  to SATA-AHCI. I'm having problem with my disk that hangs everytime it detected this error occured in dmesg:

hda: status timeout: status=0xd0 { Busy }
ide: failed opcode was: unknown
hda: no DRQ after issuing MULTWRITE_EXT
ide0: reset: success

Changing to SATA-AHCI won't boot the server since it cannot find the disk.

Current grub.conf:

#boot=/dev/hda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux Server (2.6.18-8.el5)
        root (hd0,0)
        kernel /vmlinuz-2.6.18-8.el5 ro root=/dev/VolGroup00/LogVol00 pci=nommco
nf rhgb quiet
        initrd /initrd-2.6.18-8.el5.img


Thanks in advance.


Mike