grub无法引导xp，--------已解决

chenliang0520

grub版本0.97

硬盘情况：
sda：第一主分区arch根分区
sdb：第一主分区xp fat32格式   第二主分区ubuntu 第三主分区arch系统的/boot
grub安装在sda的mbr

sdb1原本为vista，ntfs格式，因为v不爽，昨晚重装xp fat32格式，装之前进bios临时调换了硬盘启动顺序，装好后调回启动顺序，结果grub启动菜单选择进入xp后就停在了grub minimal console界面，百度了半天，尝试手动启动也失败

menu.lst:

# (0) Arch Linux
title  Arch Linux
root   (hd1,2)
kernel /vmlinuz26 root=/dev/sda1 ro
initrd /kernel26.img

# (1) Arch Linux
title  Arch Linux Fallback
root   (hd1,2)
kernel /vmlinuz26 root=/dev/sda1 ro
initrd /kernel26-fallback.img

# (1) Windows XP
title Windows XP
rootnoverify (hd1,0)
makeactive
chainloader +1

# (3) Ubuntu 8.04
title                Ubuntu 8.04, kernel 2.6.24-16-generic
root                (hd1,1)
kernel                /boot/vmlinuz-2.6.24-16-generic root=/dev/sdb2 ro quiet nosplash
initrd                /boot/initrd.img-2.6.24-16-generic

# (4) Ubuntu 8.04 Recovery Mode
title                Ubuntu 8.04, kernel 2.6.24-16-generic (recovery mode)
root                (hd1,1)
kernel                /boot/vmlinuz-2.6.24-16-generic root=/dev/sdb2 ro single
initrd                /boot/initrd.img-2.6.24-16-generic

grub中通过tab健查询：

grub> root (hd0,)
Possible partitions are:
   Partition num: 0,  Filesystem type is jfs, partition type 0x6
   Partition num: 1,  Filesystem type unknown, partition type 0x7
   Partition num: 2,  Filesystem type unknown, partition type 0x6
   Partition num: 3,  Filesystem type unknown, partition type 0x7

grub>
  grub> root (hd1,)
  Possible partitions are:
   Partition num: 0,  Filesystem type is fat, partition type 0xc
   Partition num: 1,  Filesystem type is reiserfs, partition type 0xaf
   Partition num: 2,  Filesystem type is jfs, partition type 0x83
   Partition num: 4,  Filesystem type unknown, partition type 0x82
   Partition num: 5,  Filesystem type is jfs, partition type 0x83
   Partition num: 6,  Filesystem type is jfs, partition type 0x83
   Partition num: 7,  Filesystem type unknown, partition type 0x7

grub> root (hd1,) 0x7

加入：map (hd0) (hd1)
         map (hd1) (hd0)
后解决