环境：
vmware7+rhel6
操作：
rhel6安装后默认情况下启动时只在界面下方显示一个启动状态进度条
[root@RHEL6B ~]# more /boot/grub/menu.lst
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/sda3
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux (2.6.32-71.el6.i686)
root (hd0,0)
kernel /vmlinuz-2.6.32-71.el6.i686 ro root=UUID=c327cbef-47e9-4b0e-8d7f-1c397ebb5fd4 rd_NO_LUKS rd_
NO_LVM rd_NO_MD rd_NO_DM LANG=zh_CN.UTF-8 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto rhgb quiet
initrd /initramfs-2.6.32-71.el6.i686.img
[root@RHEL6B ~]#
现在把它改成让系统启动时显示状态信息：
[root@RHEL6B ~]# more /boot/grub/menu.lst
# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE: You have a /boot partition. This means that
# all kernel and initrd paths are relative to /boot/, eg.
# root (hd0,0)
# kernel /vmlinuz-version ro root=/dev/sda3
# initrd /initrd-[generic-]version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,0)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux (2.6.32-71.el6.i686)
root (hd0,0)
kernel /vmlinuz-2.6.32-71.el6.i686 ro root=UUID=c327cbef-47e9-4b0e-8d7f-1c397ebb5fd4 rd_NO_LUKS rd_
NO_LVM rd_NO_MD rd_NO_DM LANG=zh_CN.UTF-8 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=auto
initrd /initramfs-2.6.32-71.el6.i686.img
也就是把kernel那行的rhgb quiet部分删除了，然后保存，重新启动看看：
现在就可以看到很多信息了：
