On Tue, Feb 8, 2011 at 4:31 PM, Xinhuan Zheng <xzheng at christianbook.com> wrote: > My grub.conf is pointing to sdb1 for /. I've corrected to use > /dev/vg0/lv1. But after rebooting, I am getting the same error. I guess > I need to rebuild initrd.img file. How do I rebuild that file? You'd use the mkinitrd utility and specify the name of the new initrd and the kernel version. To create from the current settings: Update your /etc/modprobe.conf mkinitrd /boot/my_new_initrd-`uname -r`.img `uname -r` Then update your /etc/grub.conf and update the initrd line.. You can specify an alternate kernel than the one running also. This is useful if you're rebooting into a new kernel and need to preload the modules.