On Tue, 2009-02-03 at 15:39 +0200, Paolo Supino wrote:
Hi Here's my /boot/grub/grub.conf content: grub.conf generated by anaconda # # Note that you do not have to rerun grub after making changes to this file # NOTICE: You do not have a /boot partition. This means that # all kernel and initrd paths are relative to /, eg. # root (hd0,0) # kernel /boot/vmlinuz-version ro root=/dev/mapper/sil_aibhcbccdhagp1 # initrd /boot/initrd-version.img #boot=/dev/mapper/sil_aibhcbccdhag default=0 timeout=10 splashimage=(hd0,0)/boot/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.18-92.1.22.el5) root (hd0,0) kernel /boot/vmlinuz-2.6.18-92.1.22.el5 ro root=LABEL=/ pci=nommconf initrd /boot/initrd-2.6.18-92.1.22.el5.img title CentOS (2.6.18-92.el5) root (hd0,0) kernel /boot/vmlinuz-2.6.18-92.el5 ro root=LABEL=/ pci=nommconf initrd /boot/initrd-2.6.18-92.el5.img
As you can see there's no mentioning of "acpi=off" anywhere .... and unless I stop it and change the command line parameter from acpi=off to pci=nommconf it still boots with acpi=off ... :-(
Sounds like your boot/root is not what you think it is. I had an LFS system I built long ago and added CentOS to it. It could be booted from either HD. I forgot to change my root= stuff in fstab when I finally converted fully. Took me awhile to figure out why changes I made had no effect on booting. I changed my root in fstab and all worked well after that.
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HTH