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Windows 7: Dual boot - remove 1st partition

04 Nov 2009   #1

windows 7 ultimate
 
 
Dual boot - remove 1st partition

Hi,
I hope this is the right place to post.

I have 2 partitions with windows 7 on both of them in dual boot.

I would like to destroy the first partition, and merge the empty space in to the second partition. At the end i need the second windows to work as single boot.

What is the best way (or the right way) to do it.
I am afraid if i simply delete the first partition the computer wont boot at all, because of the mbr etc...

Please advice, thanks.

My System SpecsSystem Spec
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04 Nov 2009   #2

Win 7 Ultimate x64
 
 

I've a solution but need to know if you have two disk drives or just one?
My System SpecsSystem Spec
04 Nov 2009   #3

Microsoft Community Contributor Award Recipient

Windows 7 Ult x64 - SP1/ Windows 8 Pro x64
 
 

Your correct, your MBR is likely in the first partition. Was it installed first?
If it has the 'System' listed in Disk Manager then it has the boot manager files.

Have a look at this Seven Forums tutorial How to Delete a Listed Operating System at Boot in Windows 7.

After following the tutorial check Disk management, look for 'System' and 'Active' in the Windows 7 partition you want to keep.

Post a picture of Disk Management.
Start button, click Snipping Tool, save somewhere.

How to Post a Screenshot in Seven Forums
My System SpecsSystem Spec
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04 Nov 2009   #4

windows 7 ultimate
 
 

Thank you for the help, i will follow the steps.
I have a single disk, but I have an external disk too if it helps.

First partition was indeed installed first.
My System SpecsSystem Spec
04 Nov 2009   #5

windows 7 ultimate
 
 

I am following the steps now, but i dont understand how i remove the partition.
By changing my boot menu.....
My System SpecsSystem Spec
04 Nov 2009   #6

windows 7 ultimate
 
 

attached my disk management screen shot


Attached Thumbnails
Dual boot - remove 1st partition-diskmanage.png  
My System SpecsSystem Spec
04 Nov 2009   #7

Windows 7 x64 finally!
 
 

archmisha, which one you intend to keep, C or Z?

I will let Dave elaborate, but I believe he will now instruct you how to delete the partition without affecting your boot (or preparing it so it is not affected). We need to know the above to proceed, since you might have to edit your boot options or not.
My System SpecsSystem Spec
04 Nov 2009   #8

windows 7 ultimate
 
 

I need to remove C and leave Z.
(removing z could be easier )
My System SpecsSystem Spec
04 Nov 2009   #9

Win 7 Ultimate x64
 
 

Is there enough free space on the external drive to handle the entire Z: drive (non-compressed)? Can you boot from your external drive? Go to Acronis True Image site and read about its capabilities. Also, read up on Partition Magic. Then get back to us.
My System SpecsSystem Spec
04 Nov 2009   #10

Microsoft Community Contributor Award Recipient

Vista x64 / 7 X64
 
 

Hi archmisha,

Open an elevated command prompt and type:

bcdboot z:\windows /s z:

then press enter.

close command prompt.

In Disk Management Rt click Z and select Mark as Active.

Restart.
My System SpecsSystem Spec
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 Dual boot - remove 1st partition




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