安装rh72，选择如下
安装界面：
( ) Use GRUP as the boot loader
(*) Use LILO as the boot loader
( ) Do not install a boot loader
Install Boot laderrecord on:
(*) /dev/hda Master Boot Record(MBR)
( ) /dev/hda7 First sector of boot partition
Kernel Parameters_______________
Partition: /dev/hda7 Type:ext3
( ) Default boot image
Boot label: red had linux 默认ok就行了
Ddfault Derice Partition Type Boot label
(*) /dev/hda1 dos/windows dos
( ) /dev/hda7 ext3 red hat linux
以上就是lilo来启动管理，把启动加载到 mbr区 默认启动win，肯定有双系统！多多仔细看看相关资料