環境：
vmware7+rhel6
操作：
rhel6安裝後默認情況下啓動時只在界面下方顯示一個啓動狀態進度條
[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 ~]#
現在把它改成讓系統啓動時顯示狀態信息：
[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部分刪除了，然後保存，重新啓動看看：
現在就可以看到很多信息了：
