On 03/10/2013 11:23 PM, Frank Cox wrote: > On Sun, 10 Mar 2013 23:16:10 -0400 > Gerry Reno wrote: > >> Boot to rescue mode and see if you can mount the device containing the root >> filesystem readonly and see all the files on it. >> >> Then check that the kernel root option is looking at the same device. > I can indeed see all of the files on that computer, including the boot > directory and everything under / > > I don't know what to do from that point, though. > > Here is the grub.conf from the working system, which is pretty much identical > to one of the non-working systems. I assume that you mean I need to do > something to change and/or fix the root= portion of the kernel commandline, but > how do I find out what to change it to? > > default=0 > timeout=5 > splashimage=(hd0,0)/grub/splash.xpm.gz > hiddenmenu > title CentOS (2.6.32-358.0.1.el6.i686) > root (hd0,0) > kernel /vmlinuz-2.6.32-358.0.1.el6.i686 ro > root=/dev/mapper/vg_ws195-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD quiet > SYSFONT=latarcyrheb-sun16 rd_LVM_LV=vg_ws195/lv_swap rhgb crashkernel=auto > KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg_ws195/lv_root rd_NO_DM > initrd /initramfs-2.6.32-358.0.1.el6.i686.img > > Do you know if this grub file was rewritten? Can you check it against a backup copy? Other than that I've given you my best suggestions. .