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Windows 7: Repair MBR without CD


20 Nov 2010   #1

Windows 7 Home Premium x64
 
 
Repair MBR without CD

I recently got rid of my Linux installation, which I previously had dual booting with Windows 7.

If possibly, I'd like to restore the MBR to it's original state, so I can just boot directly into Windows instead of still having to go through Grub with one OS on it.

However, all the help I could find requires having the Windows 7 disc to boot into recovery mode, but I don't have the disc.

Is there any other way I can fix the MBR?

My System SpecsSystem Spec
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20 Nov 2010   #2
mjf

Windows 7x64 Home Premium SP1
 
 

Download
System Repair Disk

If you need further assistance post a screenshot from Diskmanagement.

Edit: the normal procedure would be to set your win 7 OS partition active and run Repair 3 separate times. Sending a screen shot would be safer.
My System SpecsSystem Spec
20 Nov 2010   #3

Windows 7 Home Premium x64
 
 

Yeah I have no idea what I'd do after getting into recovery mode, come to think of it. Should I just post a screenshot and be directed from there?
My System SpecsSystem Spec
.


20 Nov 2010   #5

Windows 7 Home Premium x64
 
 

When I run diskpart, I have two partitions, one which is 19 GB (which I assume is a recovery partition, but I'm not sure) and the other partition, which is the rest of my hard drive.

Which should I make active?

EDIT: With the larger partition, this did not work. It is still booting to the GRUB shell.
My System SpecsSystem Spec
20 Nov 2010   #6

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Look for bootmgr on one of those partitions.
My System SpecsSystem Spec
20 Nov 2010   #7

Windows 7 Home Premium x64
 
 

How do I search partitions for something? I have little knowledge about the inner workings of Windows, so a deeper explanation would be appreciated.
My System SpecsSystem Spec
20 Nov 2010   #8
Microsoft MVP

 

Bring each partition into focus with DISKPART then Detail Partition to see which is currently active.

The reason to do this is some manufacturers mark the Recovery Partition Active so it will run when selected from Windows or boot.

If it is, then run Startup Repair up to 3 separate times to see if Windows 7 will start.

If it won't then mark the Windows 7 partition Active and try Startup Repair again x3.

There is a very good chance that GRUB may have corrupted Windows 7 beyond Repair. So you might want to consider trying to run the Recovery partition from boot by tapping Asus F9 key to restore to Factory condition.

You can copy out your files if necessary using free Paragon Rescue CD.
My System SpecsSystem Spec
20 Nov 2010   #9

Windows 7 Home Premium x64
 
 

I already tried it with the Windows 7 partition first, and it did nothing. Will the fact that I did them out of order cause issues when I attempt it with the recovery partition?

EDIT: When using startup repair on the Recovery Partition, after the first time restarting, when the CD boots again, before I can even select to go into WinRE mode, it asks if I should apply repairs and restart. Should I do this and then run start up repair more or should I just run startup repair again?
My System SpecsSystem Spec
20 Nov 2010   #10
mjf

Windows 7x64 Home Premium SP1
 
 

I got the impression earlier that you could still boot into windows???
If you can then go to disk management and send a screen shot like I suggested.

Edit: looks like you may not have the ability to do that now.
My System SpecsSystem Spec
Reply

 Repair MBR without CD




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