Installation of Windows 7 on a separate HDD

Hi,

I have a question regarding installation of Windows 7 on a separate HDD.

Could you tell me if Windows 7 makes changes to the MBR on the XP disk or does it only add an option to it's own MBR to offer the choice to boot the XP disk instead?

The reason I'd like to know is that my current setup is as follows :-
1st HDD - partition 1 = XP swap, partition 2 = Ubuntu OS
2nd HDD - Win XP OS

GRUB is on the 1st HDD which I've configured manually to give me a choice of either booting into Ubuntu or XP (it maps XP to believe it is actually residing on the 1st HDD).
This setup leaves the XP installation completely untouched should I wish to remove the 2nd HDD at any time.

I would like to be able to replace the Ubuntu installation with Windows 7 RC on the same terms and wonder if this is possible by following this tutorial. What I don't want is Windows 7 to interfere with my XP installation in any way.

If possible I'd rather not have to install Win7 and Ubuntu on the 1st HDD and reconfigure GRUB to take over installation of all 3 OS unless this is the best/simplest solution!

Any input/suggestions appreciated.

Hi Sope, which HDD is set as the 1st boot device in BIOS?

Where do you want to install Windows 7? 1st or 2nd HDD? Also, you said that you already have Ubuntu and you want to replace it with Windows 7(without touching XP installation on the 2nd HDD)? Am i correct?

If you remove ubuntu and install win 7 on 1st hdd(replacing ubuntu), windows 7 boot manager can see windows xp. however, after installation of windows 7, if you try to boot to windows xp, you might get one of the following errors:
1: NTLDR is missing or corrupt.
2: Boot.ini missing or corrupt.
3: Disk read error occurred.

But you don't have to worry about it. If you have windows xp disk handy with you. we can boot to xp recovery console and can fix these above mentioned problem(99%).


Hope this helps,
Dinesh.

So is this because Win7 will have indeed written something to the MBR of my XP disk? Or, is it because WinXP now "sees" that it is installed on 2nd HDD and is getting confused?

Windows 7 has backward compatibility and it should recognize XP.

The reason I want to avoid making any changes to my XP installation is that I'd like the reassurance that I could simply remove the Win7 HDD from the machine and XP would still function normally as in my current setup.

Xp is less reliable when it comes to damaging boot files. There are chances that you lose xp boot functionality. In this case, using Windows 7, You can still browse to the partition where XP is installed and then go to X:\Windows\System32\msconfig.exe and edit/modify the boot.ini file in order to get it to work. Again, a critical operation.

Or is your idea to use XP recovery console to modify XP settings a more simple and safer option? I assume that if I go with this option and fail to fix XP from recovery console I could rewrite the MBR from a disk image backup and put things back the way they were?

Keep recovery console as a last resort. It includes changing the hidden/read/write permission for boot.ini file and then delete it and then reinstall it again. Very very critical. It may or may not work.

So here, the best idea would be to remove the XP HDD and install windows 7 and then according to your usage, keep changing the boot device order accordingly.

Hope i did not confuse you. LOL.

you are welcome Sope. If ever plan to install ubuntu with windows 7, let windows boot loader handle the things. Or try Wubi - Ubuntu Installer for Windows.
This is what i use to taste Linux. Its very easy and safe.