root (hd0,0)
kernel /vmlinuz-2.6.32-573.8.1.el6.i686 ro root=/dev/mapper/VolGroup-lv_root nomodeset rd_NO_LUKS rd_NO_MD rd_LVM_LV=VolGroup/lv_swap quiet rhgb crashkernel=128M LANG=zh_CN.UTF-8 rd_LVM_LV=VolGroup/lv_root KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM
initrd /initramfs-2.6.32-573.8.1.el6.i686.img
原文：http://www.cnblogs.com/shanmao/p/5199777.html