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Windows 7: Moving MBR to Windows 7 drive


30 Nov 2010   #1

Windows 7 Ultimate x64
 
 
Moving MBR to Windows 7 drive

Alright, so here is the lowdown...I have two internal hard drives (we will call them 7 and XP, for simplicities sake ). I originally had XP installed on one of the drives, while the other was a storage drive. To make my transition to 7 smoother, I installed 7 on the storage drive, basically dual-booting for a little while. Now I would like to format and clean out the XP drive and make that my storage drive - but my system is still viewing the XP drive as the "active, system drive" and won't allow me to format it. Even if I unplug that drive and attempt to boot only to the 7 drive, it won't let me. I have tried startup repair with the 7 DVD at least a dozen times, as well as running the bootsect command to get the MBR onto the 7 drive, but no luck yet (and I have tried both with the XP drive plugged in as well as unplugged).

There has got to be a way for me to get the boot record on the 7 drive and allow it to boot by itself, right? Without me having to reinstall 7? Any and all suggestions are welcome. Thanks!

My System SpecsSystem Spec
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30 Nov 2010   #2

Windows7 Pro 64bit SP-1; Windows XP Pro 32bit
 
 

Bootmgr is missing - Fix

There are two ways listed using Win 7 disk.
Disconnecting the XP hard drive may be necessary I would think.

Mike
My System SpecsSystem Spec
30 Nov 2010   #3
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

1. Use this program (the bootable CD version - on the left side of the webpage) to mark your XP partition inactive and mark the Windows 7 partition as active. You find the settings in the Partition tab > Modify.

2, Create an MBR following this tutorial:
http://www.sevenforums.com/tutorials/20864-mbr-restore-windows-7-master-boot-record.html

3. Boot into Windows 7 and delete the XP partition. Then you can create whatever you like in the freespace.
My System SpecsSystem Spec
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30 Nov 2010   #4
Microsoft MVP

 

Another method:

Mark Windows 7 partition Active using Diskpart: Partition - Mark as Active

Unplug the XP HD temporarily so it doesn't interfere. Set Windows 7 HD as first HD to boot in BIOS setup, after DVD drive.

Boot the Windows 7 DVD Repair console, accept any offered repair, then boot back in to run Startup Repair up to 3 separate times with reboots until Windows 7 starts on its own. Startup Repair - Run 3 Separate Times

Power down to plug back in XP HD, use Diskpart from Command Line to wipe XP HD of all code, or delete the XP partition using Diskpart command to Delete Partition Override. Disk - Clean and Clean All with Diskpart Command
My System SpecsSystem Spec
01 Dec 2010   #5
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello PackerFanatic, welcome to Seven Forums!



Everyone makes this seem so hard; everything needed to do this is in this one tutorial at the link below, especially from the situation you're in; though if the first attempt with all HDDs connected doesn't work, disconnect the XP HDD and give that a go.

Startup Repair - Run 3 Separate Times



Be sure to post back to keep us informed.
My System SpecsSystem Spec
01 Dec 2010   #6

Windows 7 Ultimate x64
 
 

Alright, looking a little closer at my Windows 7 drive...it looks like it is setup as a logical, extended partition and it won't allow me to mark it as the "active partition". I imagine the only way to make it the primary partition would be to format it as such.
My System SpecsSystem Spec
01 Dec 2010   #7
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Quote   Quote: Originally Posted by PackerFanatic View Post
Alright, looking a little closer at my Windows 7 drive...it looks like it is setup as a logical, extended partition and it won't allow me to mark it as the "active partition". I imagine the only way to make it the primary partition would be to format it as such.
Do you also see a 100MB hidden partition?
My System SpecsSystem Spec
01 Dec 2010   #8

Windows 7 Ultimate x64
 
 

On the Windows 7 drive? No.
My System SpecsSystem Spec
01 Dec 2010   #9
whs
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8
 
 

Are there other drives where you may have an active boot partition?
My System SpecsSystem Spec
01 Dec 2010   #10
mjf

Windows 7x64 Home Premium SP1
 
 

Are you able to send a screen shot from disk management

Send screen shot
My System SpecsSystem Spec
Reply

 Moving MBR to Windows 7 drive




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