求助：多系统启动的问题

Question

我安装了XP

后来又安装了UBUNTU

再后来有安装了RHEL5.6x86_32

可是rhel的grub覆盖了MBR以后就引导不起来UBUNTU了，但是可以引导xp

下面我贴出RHEL的grub.conf和UBUNTU下的grub

请高手指点如何在rhel的grub中添加启动项让其能够引导UBUNTU

谢谢了！

RHEL-GRUB

# 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 (hd0,2)
#          kernel /vmlinuz-version ro root=/dev/hda4
#          initrd /initrd-version.img
#boot=/dev/hda
default=1
timeout=10
splashimage=(hd0,2)/grub/splash.xpm.gz
hiddenmenu
title Red Hat Enterprise Linux Server (2.6.18-238.el5)
    root (hd0,2)
    kernel /vmlinuz-2.6.18-238.el5 ro root=LABEL=/ rhgb quiet
    initrd /initrd-2.6.18-238.el5.img
title WIN XP
    rootnoverify (hd0,0)
    chainloader +1
title UBUNTU
    rootnoverify (hd0,6)
    chainloader +1

 

UBUNTU-grub

#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  set have_grubenv=true
  load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
  set saved_entry="${prev_saved_entry}"
  save_env saved_entry
  set prev_saved_entry=
  save_env prev_saved_entry
  set boot_once=true
fi

function savedefault {
  if [ -z "${boot_once}" ]; then
    saved_entry="${chosen}"
    save_env saved_entry
  fi
}

function recordfail {
  set recordfail=1
  if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env recordfail; fi; fi
}

function load_video {
  insmod vbe
  insmod vga
  insmod video_bochs
  insmod video_cirrus
}

insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos7)'
search --no-floppy --fs-uuid --set=root 6877dcc2-8732-4e9d-a04c-8ba8de36b5fe
if loadfont /usr/share/grub/unicode.pf2 ; then
  set gfxmode=auto
  load_video
  insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(/dev/sda,msdos7)'
search --no-floppy --fs-uuid --set=root 6877dcc2-8732-4e9d-a04c-8ba8de36b5fe
set locale_dir=($root)/boot/grub/locale
set lang=zh_CN
insmod gettext
if [ "${recordfail}" = 1 ]; then
  set timeout=-1
else
  set timeout=10
fi
### END /etc/grub.d/00_header ###

### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30; then
  clear
fi
### END /etc/grub.d/05_debian_theme ###

### BEGIN /etc/grub.d/10_linux ###
if [ ${recordfail} != 1 ]; then
  if [ -e ${prefix}/gfxblacklist.txt ]; then
    if hwmatch ${prefix}/gfxblacklist.txt 3; then
      if [ ${match} = 0 ]; then
        set linux_gfx_mode=keep
      else
        set linux_gfx_mode=text
      fi
    else
      set linux_gfx_mode=text
    fi
  else
    set linux_gfx_mode=keep
  fi
else
  set linux_gfx_mode=text
fi
export linux_gfx_mode
if [ "$linux_gfx_mode" != "text" ]; then load_video; fi
menuentry 'Ubuntu锛孡inux 2.6.38-8-generic' --class ubuntu --class gnu-linux --class gnu --class os {
    recordfail
    set gfxpayload=$linux_gfx_mode
    insmod part_msdos
    insmod ext2
    set root='(/dev/sda,msdos7)'
    search --no-floppy --fs-uuid --set=root 6877dcc2-8732-4e9d-a04c-8ba8de36b5fe
    linux    /boot/vmlinuz-2.6.38-8-generic root=UUID=6877dcc2-8732-4e9d-a04c-8ba8de36b5fe ro   quiet splash vt.handoff=7
    initrd    /boot/initrd.img-2.6.38-8-generic
}
menuentry 'Ubuntu锛孡inux 2.6.38-8-generic (鎭㈠妯″紡)' --class ubuntu --class gnu-linux --class gnu --class os {
    recordfail
    set gfxpayload=$linux_gfx_mode
    insmod part_msdos
    insmod ext2
    set root='(/dev/sda,msdos7)'
    search --no-floppy --fs-uuid --set=root 6877dcc2-8732-4e9d-a04c-8ba8de36b5fe
    echo    'Loading Linux 2.6.38-8-generic ...'
    linux    /boot/vmlinuz-2.6.38-8-generic root=UUID=6877dcc2-8732-4e9d-a04c-8ba8de36b5fe ro single
    echo    'Loading initial ramdisk ...'
    initrd    /boot/initrd.img-2.6.38-8-generic
}
### END /etc/grub.d/10_linux ###

### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###

### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
    insmod part_msdos
    insmod ext2
    set root='(/dev/sda,msdos7)'
    search --no-floppy --fs-uuid --set=root 6877dcc2-8732-4e9d-a04c-8ba8de36b5fe
    linux16    /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
    insmod part_msdos
    insmod ext2
    set root='(/dev/sda,msdos7)'
    search --no-floppy --fs-uuid --set=root 6877dcc2-8732-4e9d-a04c-8ba8de36b5fe
    linux16    /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###

### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Professional (on /dev/sda1)" --class windows --class os {
    insmod part_msdos
    insmod ntfs
    set root='(/dev/sda,msdos1)'
    search --no-floppy --fs-uuid --set=root 3448327A48323AC6
    drivemap -s (hd0) ${root}
    chainloader +1
}
### END /etc/grub.d/30_os-prober ###

### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries.  Simply type the
# menu entries you want to add after this comment.  Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###

### BEGIN /etc/grub.d/41_custom ###
if [ -f  $prefix/custom.cfg ]; then
  source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###

Answer 1

我记得两个很难共存，原因是两者对簇的定义不一样大（我忘了是什么的定义不一样大，貌似是这个），所以需要调整一个的簇定义。。。。高手勿拍，我真的记不住了。。。。