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<p><FONT class=normalfont><B><font color=blue>硬盘改变位置之后重新安装GRUB以及修改相应文件的方法</font></B></FONT><BR><FONT class=smallfont color=#ff9900>2004-04-23 15:18 pm</FONT><BR><FONT class=normalfont>作者：Seraphim(张乐奕)<br>来自：Linux知识宝库<br>联系方式：无名<br><br>修改GRUB(2003-09-22 09:50:49)<br>
By seraphim<br>
Author：Seraphim（张乐奕）<br>
Mail：seraphim@itpub.net<br>
Date：2003-08<br>
问题描述：<br>
原来系统是装在计算机第二个IDE口上(hdc)，mount了另外一块hda到/u01下面。<br>
现在想把这两块硬盘的位置对调一下，hda->hdc，原来的hdc->hda，请问我该如何修改GRUB的配置？<br>
当前硬盘配置和GRUB配置如下所示：<br>
linux:/home/zhangleyi # fdisk -l<br>
Disk /dev/hdc: 10.2 GB, 10262568960 bytes<br>
16 heads, 63 sectors/track, 19885 cylinders<br>
Units = cylinders of 1008 * 512 = 516096 bytes<br>
Device Boot Start End Blocks Id System<br>
/dev/hdc1 * 1 25 12568+ 83 Linux<br>
/dev/hdc2 26 2522 1258488 82 Linux swap<br>
/dev/hdc3 2523 19885 8750952 83 Linux<br>
Disk /dev/hda: 20.5 GB, 20576747520 bytes<br>
255 heads, 63 sectors/track, 2501 cylinders<br>
Units = cylinders of 16065 * 512 = 8225280 bytes<br>
Device Boot Start End Blocks Id System<br>
/dev/hda1 * 1 2501 20089251 83 Linux<br>
linux:/home/zhangleyi # more /etc/grub.conf<br>
root (hd0,0)<br>
install --stage2=/boot/grub/stage2 /grub/stage1 d (hd0) /grub/stage2 0x8000 (hd0,0)/grub/menu.lst<br>
quit<br>
linux:/home/zhangleyi # more /boot/grub/menu.lst<br>
# Modified by YaST2. Last modification on Sat Aug 2 09:56:00 2003<br>
<br>
gfxmenu (hd1,0)/message<br>
color white/blue black/light-gray<br>
default 0<br>
timeout 8<br>
title linux<br>
kernel (hd1,0)/vmlinuz root=/dev/hdc3 vga=791 splash=silent<br>
initrd (hd1,0)/initrd<br>
title floppy<br>
root (fd0)<br>
chainloader +1<br>
title failsafe<br>
kernel (hd1,0)/vmlinuz.shipped root=/dev/hdc3 ide=nodma apm=off acpi=off vga=normal nosmp maxcpus=0 disableapic 3<br>
initrd (hd1,0)/initrd.shipped<br>
linux:/home/zhangleyi #<br>
首先感谢www.linuxsir.com的beyond_2000斑竹的耐心解释，才有了这篇东西的诞生。<br>
其次，对于GRUB的详细解释，可以用info grub得到。<br>
目的：<br>
本来系统安装在hdc上(也就是第二个IDE接口的primary位置上)，GRUB装在另一块硬盘hda上，现在想把这两块硬盘位置对调一下。<br>
方法：<br>
首先more /etc/fstab，确认当前有几个独立的文件系统，我的机器情况如下：<br>
/dev/hdc3是/，/dev/hdc1是/boot，/dev/hdc2是swap。<br>
1. 关机，把硬盘的连线从hdc改成hda<br>
2. 用SuSE安装盘的CD1启动计算机<br>
3. 在启动菜单中选择rescue<br>
4. 输入root，不需要密码，进入rescue命令行<br>
5. pwd，可以看到当前目录为/root，退回到/<br>
5. 键入grub，进入grub命令状态<br>
6. find /boot/grub/stage1，该命令用于确认包含boot所需文件的目录，显示hd0,0<br>
7. root (hd0,0)<br>
8. setup (hd0) 显示成功安装GRUB<br>
9. quit，退出grub命令行状态<br>
10. mount /dev/hda1 /tmp (备注：没有该硬盘连线之前是hdc，现在是hda了，该命令将mount原先的/boot分区)<br>
11. mount /dev/hda3 /usr (备注：该命令将mount原先的/分区)<br>
12. vi /tmp/grub/menu.lst，将所有的hd1改为hd0，hdc改成hda，存盘退出<br>
13. vi /usr/etc/fstab， 将所有的hdc改成hda,hda改成hdc，存盘退出<br>
14. 重启计算机，OK<br>
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