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Windows 7: Changing "System" disk on an XP/7 multiboot setup

21 Jan 2010   #1
schwig

XP Pro 32 / 7 Pro 32
 
 
Changing "System" disk on an XP/7 multiboot setup

Hi, I have a multiboot setup, with XP on my C: drive and Win7 on G:, but I want to remove the hard drive with XP on it and just stick with Win7. Problem is, C: is considered the "system" disk, so I can't remove the hard drive and just have Win7, which is what I want to do.

Here's a screenshot of my setup:
-diskmng.jpg

C: = XP
E: = Partition on the C drive
D: = various data, no OS
G: = Win7

Can I use the same bootsect.exe solution that SIW2 recommended for another user who posted here (Drakmyth)? I would greatly appreciate any help before I do something stupid and accidentally nuke my computer.

Thanks very much in advance,
Andy




My System SpecsSystem Spec
21 Jan 2010   #2
Jonathan_King

Windows 7 Professional x64
 
 

Welcome!

It is actually pretty simple to remove the XP drive. Just unplug it, and run Startup Repair if 7 won't boot.

Hope this helps,
~JK
My System SpecsSystem Spec
21 Jan 2010   #3
Pauly

Win7 Ultimate X64
 
 

Shouldnt be a problem removing xp drive as boot files are already on the g drive
Simply use bcdedit to remove xp entry from boot files

If you get any problems booting after you remove it just run startup repair of your installation disc (may need to run upto three times to fix the error) and you should be sorted
My System SpecsSystem Spec
21 Jan 2010   #4
schwig

XP Pro 32 / 7 Pro 32
 
 

Hi, thank you both for the quick reply. Unfortunately I don't have an installation disc as I got Win7 through the Digital River download program for students. Is there a way I can get the Startup Repair program without the disc, or is there another way?

Thanks

P.S. If I remove the XP drive now, when I choose to boot from the Win7 drive it just says "Error loading OS" after the BIOS screen.
My System SpecsSystem Spec
21 Jan 2010   #5
Jonathan_King

Windows 7 Professional x64
 
 

Yes, there is a way!

Follow the instructions here for how to create a repair disc.

You may have to download the ISO (the last method) if you cannot get to a 7 machine,
My System SpecsSystem Spec
21 Jan 2010   #6
theog

Microsoft Community Contributor Award Recipient

ME/XP/Vista/Win7
 
 

You may need to delete Win XP from the list of OS at boot.

http://www.sevenforums.com/tutorials...oot.html?ltr=O

Make bootable iso from student d/l
My System SpecsSystem Spec
21 Jan 2010   #7
gregrocker
Microsoft MVP

 

If you'd like to use your Digital River download to create a bootable ISO to burn to DVD or write to a flash stick, use this: Make bootable iso from student d/l

Burn to DVD using ImgBurn at 4x with Verify, or write to flash stick using this method: USB Windows 7 Installation Key Drive - Create

Or you can download just the Win7 repair console from here to burn to CD or write to flash stick: Download Windows 7 System Recovery Discs — The NeoSmart Files

Once you have the bootable Win7 Repair console, mark the Win7 paritition Active in Disk Mgmt, power down to unplug XP drive, then boot the Win7 CD/DVD Repair console to run Startup Repair up to 3 separate times with reboots to write the MBR to Win7 partition.
My System SpecsSystem Spec
21 Jan 2010   #8
Saltgrass

Windows 7 x64
 
 

Quote   Quote: Originally Posted by schwig View Post
C: = XP
E: = Partition on the C drive
D: = various data, no OS
G: = Win7

Can I use the same bootsect.exe solution that SIW2 recommended for another user who posted here (Drakmyth)? I would greatly appreciate any help before I do something stupid and accidentally nuke my computer.
You should be able to use the same commands, but the drive letters might be different.

Hopefully he will come along, but I am guessing the command would be:

bootbcd G:\Windows /s G:

But I am new at this so it may not be right. Basically what you need to do is put the boot files, bootmgr and the Boot folder, on the Windows 7 partition. Make that partition active and then set that drive to primary in the bios using the Drive priority.

If you want to check to see if the files are already there, set up the folders view to show hidden system files. It is a little harder since you do not show the Win 7 drive in your disk mangment picture. It aslo seems a little strange that the boot drive letter is not C:

Using the Install DVD does this as part of the startup repair. You will always need an Install DVD, or at least Repair DVD to fix your system in the future.

I suppose I should also add if the thread you mention uses the bootsec command with a /nt60, this is probably pointing the Master Boot Record to an win 7 boot as opposed to an XP boot.
My System SpecsSystem Spec
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 Changing "System" disk on an XP/7 multiboot setup




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