Centos 开机取消进度条
１．编辑
[root@oldboy ~]# vim /boot/grub/grub.conf
２．删除“rhgb”
title CentOS (2.6.32-642.11.1.el6.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-642.11.1.el6.x86_64 ro root=UUID=c0a41f19-68d0-46
0c-8dbb-b7eb40af3a20 rd_NO_LUKS rd_NO_LVM LANG=en_US.UTF-8 rd_NO_MD SYSFONT=lata
rcyrheb-sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM quiet
