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Windows 7: Windows 7 bootloader get nuked when booting windows XP (dualboot)


14 Nov 2011   #1

Windows 7 professional 32 bit
 
 
Windows 7 bootloader get nuked when booting windows XP (dualboot)

Hello!

I have an OQO 01+, and im dualbooting it with windows 7 and windows XP. When i boot windows 7 everything is fine, and everything is working. I can also boot windows XP.

But when i boot windows XP, and shut the computer down, then i cant boot until i use a recovering CD to repair the bootloader. It simply says "Press Ctrl+Alt+Delete to restart".

It happens after installing drivers on windows 7. Then the problem appears. Before i installed the driver, there was no problem.

So does anyone have an idea, why windows XP destroy the windows 7 bootloader?

Cheers!

Andreas


My System SpecsSystem Spec
.

14 Nov 2011   #2
Microsoft MVP

 

How exactly was the Dual Boot constructed? Which OS first? EasyBCD adding XP or Win?

Please also post back a screenshot of your maximized Windows 7 Disk Mgmt drive map with listings showing all columns, using Snipping Tool in Start Menu.

How are you repairing the bootloader exactly?
My System SpecsSystem Spec
15 Nov 2011   #3

Windows 7 Professional SP1 32-bit
 
 

And which drivers did you install? (Just in case this matters...)
My System SpecsSystem Spec
.


15 Nov 2011   #4

Windows 7 professional 32 bit
 
 

The dual boot is constructed as follows:

XP was on, from start. Then Windows 7 was installed. No edit with easyBCD and so on. Just plain install.

I repair the bootloader, by booting a recovery cd and use the following commands in CMD:

bootrec.exe /fixmbr
bootsect.exe /nt60 all /force
(source: Recovering the Vista Bootloader from the DVD - EasyBCD - NeoSmart Technologies Wiki)

The drivers i installed was audiodrivers, wacom driver and a driverpack from OQO (Downloads OQO forum, drivers, repair service & support, hardware, and accessories | OQOasis). They are for XP, and i have just intalled them plain. Works nicley.

I wonder if it is because XP, in XP use the C: drive, and gives windows 7 the D: driver. And windows 7 in windows 7 use the C: drive, and gives windows XP the D: drive?

/Andreas
My System SpecsSystem Spec
15 Nov 2011   #5

Windows 7 Professional SP1 32-bit
 
 

I'm sorry, but you're contradicting yourself - in your first post, you said that you installed new drivers in Windows 7, not XP. Which is it?

What exactly did you install from the OQO website? There's an awful lot of downloads there, so you need to be more specific.

To answer your question about the drive letters, no, that's not it. It's normal (and desirable) for each Windows installation to see itself as C: whenever it's running. Each Windows "keeps its own records" of drive letter assignments, and these are not global (i.e. above the level of each Windows installation).

What I'm wondering right now is this: If XP was already installed, and you then installed 7, what prompted the need to "repair the bootloader"? During installation, 7 should have set up a dualboot with XP automatically - there wouldn't have been any need to fix anything afterward.

I'm just trying to understand the exact issue here, but these points need to be clarified before we can move on.
My System SpecsSystem Spec
15 Nov 2011   #6

Windows 7 Ultimate SP1 64-Bit
 
 

This tutorial explains how to dual-boot Windows XP and Windows 7.

Dual Boot Installation with Windows 7 and XP
My System SpecsSystem Spec
15 Nov 2011   #7

Microsoft Community Contributor Award Recipient

Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
 
 

bootrec.exe /fixmbr ->fixes the Windows 7 master boot record. this wasn't needed in this situation afaik
bootsect.exe /nt60 all /force -> put nt60 boot sector on ALL drives. Normally not a problem but only needed for vista and Windows 7 installations.

bootsect.exe /nt52 X: /force
replace X with the winxp driveletter in recovery environment. this can be C but also D!!
My System SpecsSystem Spec
15 Nov 2011   #8

Windows 7 professional 32 bit
 
 

Quote   Quote: Originally Posted by Corazon View Post
I'm sorry, but you're contradicting yourself - in your first post, you said that you installed new drivers in Windows 7, not XP. Which is it?
I installed the driver for windows XP under windows 7

Quote   Quote: Originally Posted by Corazon View Post
What exactly did you install from the OQO website? There's an awful lot of downloads there, so you need to be more specific.
I installed the following drivers:

The audio driver
The wacom driver
And the universal installer

Quote   Quote: Originally Posted by Corazon View Post
What I'm wondering right now is this: If XP was already installed, and you then installed 7, what prompted the need to "repair the bootloader"? During installation, 7 should have set up a dualboot with XP automatically - there wouldn't have been any need to fix anything afterward.
The dualboot was setup automatically, and works as it should work. I can boot both windows XP and windows 7.
But when i bot windows XP, and power off, i get a message: "A disk error occured, press ctrl+alt+delete to restart"

Andreas
My System SpecsSystem Spec
15 Nov 2011   #9
Microsoft MVP

 

Still waiting for the maximized Disk Management drive map and listings screenshot.

If Windows 7 was installed last then as stated there is no reason to repair the bootloader since it should configure a Dual Boot menu placing its boot files on XP partition.

The problems you are having with XP now may be the result of running unneeded and incorrect commands.

All necessary boot repair commands are automated in Windows 7 Startup Repair.
My System SpecsSystem Spec
16 Nov 2011   #10

Windows 7 professional 32 bit
 
 

Where excaclty do i find the disk managment map?

Thanks for the replies.

Andreas
My System SpecsSystem Spec
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 Windows 7 bootloader get nuked when booting windows XP (dualboot)




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