Dual booting with grub
 

Hello, I recently had to replace my hard drive controller and reinstalled Centos on one hard drive with windows 2000 on a separate drive. All drives are of type IDE. Windows is on the slave and Centos on master drive.

here is what fdisk -l shows;

Here is my menu.lst file

Would anyone be kind enough to show me a template to add windows into my menu.list

Would it be something like;

title Windows
root (hd1,1)
kernel (i don't know what to put here ) quiet
initrd (or what image to point it to )



Many thanks in advance

Sure, look at the Grub Booting Tips in my signature. Basically you don't need the kernel or initrd lines, instead replacing it with chainloader +1. But you'll probably also have to use the map function because Windows needs to think it's on the 1st primary hard disk.

Hi, I solved the problem the hard way. I thought you would be interested in how I did it.

I added this to /grub/menu.lst

This did not seem to make any difference. The boot menu only offered Centos. Later I realized you have to hit enter on the menu to get another sub menu. But at the time I decided go by your post to change over the slave drive to one storing Centos and set up windows as the master drive.

This time I did not get Centos instead booting straight into windows. I disconnected the drive storing windows and booted back into centos. I modified menu.lst and changed over the drives root thus;

This works but if I want to boot into windows I have to hit enter on the main centos menu and get a sub-menu. BTW i know how to map lilo but not grub. I thought grub does not need to be remapped manually.

BTW when I was installing Centos I got an option to configure grub which offered an option to add a second OS. Unlike other linux distros such as Debian, it could not see Windows on second drive. There was an option to add. But when i used this option and selected the second drive I would get a error message saying;

I don't think the map is for grub's benefit, but for Windows.

saiwash, I think you should have made your windows entry with the

rootnoverify (hd1,0)
chainloader +1

You had windows on the second hd and in the first partition.

You would not have to use the map signals seeing windows was in the first partition of the drive.

Hi again, I am experiencing a similar problem on a second machine. This one has vista and OpenSUSE on same hard drive. This is one of those cheap laptops that comes with vista without CD's. The OS is stored on specific partition which if i mess with voids warranty. I kept getting missing bootloader. So i reinstalled OpenSUSE.

This is results of fdisk -l



This is menu list

According to fdisk I think grub is point to the correct partition without any joy. Can anyone help?

title Windows
rootnoverify (hd0,1)
chainloader +1