双系统时修改启动项

当有双系统时，比如：一个windows，一个linux
可以到linux系统下
/etc/grub.conf修改启动配置

# grub.conf generated by anaconda
#
# Note that you do not have to rerun grub after making changes to this file
# NOTICE:  You do not have a /boot partition.  This means that
#          all kernel and initrd paths are relative to /, eg.
#          root (hd0,2)
#          kernel /boot/vmlinuz-version ro root=/dev/sda3
#          initrd /boot/initrd-version.img
#boot=/dev/sda
default=0
timeout=5
splashimage=(hd0,2)/boot/grub/splash.xpm.gz
hiddenmenu
title CentOS (2.6.18-92.el5PAE)
        root (hd0,2)
        kernel /boot/vmlinuz-2.6.18-92.el5PAE ro root=LABEL=/ rhgb quiet
        initrd /boot/initrd-2.6.18-92.el5PAE.img
title Other
        rootnoverify (hd0,1)
        chainloader +1

default为默认启动项，当前默认启动centos；设为1后，就启动title为Other的系统
       注：title为Other，这个可以手动修改，选择启动时，显示的名字就是这里所写的；
timeout为等待超时时间；