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Windows 7: Need some help with the boot loader


20 Jul 2009   #1

Win7 RC 7200 64bit
 
 
Need some help with the boot loader

Well for about 2 months I've been dual booting XP and 7. This past weekend I was trying to get a peak score in 3DMark06 with my PC and due to the high overclock I received a BSOD in XP, upon restarting my boot loader seemed to be corrupt. I was able to boot into 7 but not XP. This was a problem as my game saves were on XP and 7 was just general use.

I used BCDEDIT to fix the XP boot record. I tried booting to XP again and the system would just power off after I selected that option. Then I booted into repair mode on the Windows 7 DVD and used "bootrec /fixmbr" andd "bootrec /fixboot". This did not work either.

Finally as a last resort I deleted the Windows 7 partition and the smaller partition that goes along with Windows 7. I figured a fresh install would pick up on XP again. I was kind of right and kind of wrong.

When the Windows 7 DVD is in my drive it will boot to Windows 7, if I remove the Windows 7 DVD from the drive then my system boots to XP. I no longer have the option to choose an OS. This is temporarily ok as I can still get to both OS's but how on earth do I fix this?

My System SpecsSystem Spec
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20 Jul 2009   #2

Windows 7 7600.16384 x64
 
 

Have you tried booting from the Windows 7 DVD and trying a startup repair? This may restore the Bootloader for Windows7. Once you get booted in to Windows 7, then run msconfig>Boot tab and see if your entries are listed there. If they are not you can manually create one that points to the XP installation. I have used EasyBCD in the past for fixing dual boots of Linux and windows. http://neosmart.net/dl.php?id=1
My System SpecsSystem Spec
20 Jul 2009   #3

Win7 RC 7200 64bit
 
 

I did try that before I reinstalled Windows 7. Also EasyBCD did not work correctly for me either.

I will look at the boot tab under msconfig when I get home from work.
My System SpecsSystem Spec
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20 Jul 2009   #4

Windows 7 7600.16384 x64
 
 

Just out of curiosity, you say your saved games were on the XP partition....

can you still see that partition from Windows 7? If you go in to disk management, is it listed? If anything, you can just pull the files you need from the other partition over to the Windows 7 partition and then back them up.
My System SpecsSystem Spec
20 Jul 2009   #5

Windows 7 7600.16384 x64
 
 

Here is a nice walkthru by SF

System Recovery Options

Did you actually choose startup repair though after booting from the DVD?


Attached Images
 
My System SpecsSystem Spec
20 Jul 2009   #6

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Hi mudfrog,

It would help if you post screenshots of Disk Management, like this :

Need some help with the boot loader-diskmanagement2009-02-04_031947.jpg

and bcdedit ( type cmd in start seacrh box - when it pops up, rt click and run as admin- type bcdedit- press enter ):

Need some help with the boot loader-bcdedit2009-03-07_235226.jpg

http://www.sevenforums.com/tutorials...en-forums.html


My System SpecsSystem Spec
20 Jul 2009   #7

Win7 RC 7200 64bit
 
 

SIW2, I'll post screens when I get home.

7echno7im, Yes I did choose the repair option. I tried the automatic "repair startup" option as well as using the command prompt.

I can see the the XP partition from within Windows 7, I can copy the files over as a last resort.
My System SpecsSystem Spec
20 Jul 2009   #8

Windows 7 7600.16384 x64
 
 

that is good to hear. I think we can repair the Windows XP startup then. I would try running BCDEdit again or EasyBCD and recreating a link to yiour XP installation. This will be a good place to start.
My System SpecsSystem Spec
20 Jul 2009   #9

 

Seems to me what he is saying> He lost the bootmgr for XP. Since he can boot to XP with the Windows 7 DVD in.
Not sure but I think he only has to move the MBR files from Windows 7 to the XP disk. Another easier way to do this would be
insert the XP Disk, when ask do a CLEAN install, all the old XP files should then be in windows.old which he can then move.

Treat XP just like a brand new install or you can also install XP again with the UPGRADE option. Upgrade if you feel better than the clean install.
Hope you can understand sometime us old guys (66) talk differently than the younger.
My System SpecsSystem Spec
20 Jul 2009   #10

Win7 RC 7200 64bit
 
 

Quote   Quote: Originally Posted by Snuffy View Post
Seems to me what he is saying> He lost the bootmgr for XP. Since he can boot to XP with the Windows 7 DVD in.
Not sure but I think he only has to move the MBR files from Windows 7 to the XP disk. Another easier way to do this would be
insert the XP Disk, when ask do a CLEAN install, all the old XP files should then be in windows.old which he can then move.

Treat XP just like a brand new install or you can also install XP again with the UPGRADE option. Upgrade if you feel better than the clean install.
Hope you can understand sometime us old guys (66) talk differently than the younger.
Well at the moment I'm not sure which one I lost. If I do not put any discs in the drive then it will automatically boot to XP. But with the Windows 7 disc in it will boot to Windows 7 only.

If I run bootrec /fixmbr & /fixboot it will display both OS's but only boot to Windows 7 properly.

When I run EasyBCD it will only boot to XP and does not show the option for Windows 7 (Even if I verify the Windows 7 info is there).
My System SpecsSystem Spec
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 Need some help with the boot loader




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