On Wednesday 12 June 2013, Les Mikesell lesmikesell@gmail.com wrote:
#boot=/dev/sda1 device (hd0) HD(1,800,64000,0557c1a7-7538-4ba1-b81e-74c4328b8b8d) default=0 timeout=5 splashimage=(hd0,1)/grub/splash.xpm.gz hiddenmenu title CentOS (2.6.32-358.6.2.el6.x86_64) root (hd0,1) kernel /vmlinuz-2.6.32-358.6.2.el6.x86_64 ro root=/dev/mapper/vg_trepdevl01-lv_root rd_NO_LUKS LANG=en_US.UTF-8 rd_NO_MD SYSFONT=latarcyrheb-sun16 rd_NO_DM rd_LVM_LV=vg_trepdevl01/lv_swap KEYBOARDTYPE=pc KEYTABLE=us rd_LVM_LV=vg_trepdevl01/lv_root rhgb quiet crashkernel=auto initrd /initramfs-2.6.32-358.6.2.el6.x86_64.img
Ah, you posted this in the forum, didn't you? The line that starts with "device" is new to me. I thought it was something specific to UEFI or GPT I didn't know about, but apparently it can only be used at the Grub shell, not in the grub.conf file.
Look at http://wiki.centos.org/HowTos/GrubInstallation and create a grub.conf file as described in section 2.