如果你是使用的grub作为主引导程序引导双系统(Windows & Linux)的话,可以通过以下操作把windows设为默认启动的操作系统,调整两个操作系统在屏幕上的显示顺序(一般情况下grub把linux设为默认启动,而windows显示为dos):
1. 用root账户登陆到linux
2. vi /etc/grub.conf,grub.conf的内容如下
# 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 (hd0,4)
#          kernel /boot/vmlinuz-version ro root=/dev/hdc5
#          initrd /boot/initrd-version.img
#boot=/dev/hdc
default=0
timeout=10
splashimage=(hd0,4)/boot/grub/splash.xpm.gz
password --md5 $1$sefuvF4T$uet8lieX0oTII1lsnZGLJ/
title Red Hat Linux (2.4.20-8)
 root (hd0,4)
 kernel /boot/vmlinuz-2.4.20-8 ro root=LABEL=/
 initrd /boot/initrd-2.4.20-8.img
title DOS
 rootnoverify (hd0,0)
 chainloader +1

3.修改grub.conf文件就可以解决启动顺序问题,修改后的文件如下
# 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 (hd0,4)
#          kernel /boot/vmlinuz-version ro root=/dev/hdc5
#          initrd /boot/initrd-version.img
#boot=/dev/hdc
default=0
timeout=10
splashimage=(hd0,4)/boot/grub/splash.xpm.gz
password --md5 $1$sefuvF4T$uet8lieX0oTII1lsnZGLJ/
title DOS
 rootnoverify (hd0,0)
 chainloader +1
title Red Hat Linux (2.4.20-8)
 root (hd0,4)
 kernel /boot/vmlinuz-2.4.20-8 ro root=LABEL=/
 initrd /boot/initrd-2.4.20-8.img

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