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

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  1. Posts : 6
    Windows 7 professional 32 bit
       #1

    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 Computer

  2.    #2

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

    Please also post back a screenshot of your maximized Win7 Disk Mgmt drive map with listings showing all columns, using Snipping Tool in Start Menu.

    How are you repairing the bootloader exactly?
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  3. Posts : 1,781
    Windows 7 Professional SP1 32-bit
       #3

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


  4. Posts : 6
    Windows 7 professional 32 bit
    Thread Starter
       #4

    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 Computer


  5. Posts : 1,781
    Windows 7 Professional SP1 32-bit
       #5

    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.
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  6. Posts : 7,730
    Windows 7 Ultimate SP1 64-Bit
       #6

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

    Dual Boot Installation with Windows 7 and XP
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  7. Posts : 10,796
    Microsoft Windows 7 Home Premium 64-bits 7601 Multiprocessor Free Service Pack 1
       #7

    bootrec.exe /fixmbr ->fixes the win7 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 win7 installations.

    bootsect.exe /nt52 X: /force
    replace X with the winxp driveletter in recovery environment. this can be C but also D!!
      My Computer


  8. Posts : 6
    Windows 7 professional 32 bit
    Thread Starter
       #8

    Corazon said:
    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

    Corazon said:
    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

    Corazon said:
    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 Computer

  9.    #9

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

    If Win7 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 Win7 Startup Repair.
      My Computer


  10. Posts : 6
    Windows 7 professional 32 bit
    Thread Starter
       #10

    Where excaclty do i find the disk managment map?

    Thanks for the replies.

    Andreas
      My Computer


 
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