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Windows 7: Removing 100MB system partition - no re-install needed


10 Dec 2009   #21

Windows 7
 
 
bcdboot works!

Quote   Quote: Originally Posted by sup3rsprt View Post
or you could simply use the bcdboot command to create the boot manager to the Windows drive and set it "active" using the diskpart command. Although that one only works if Windows is on a primary partition.

Good job on the guide though.
Great suggestion! I just tried this last night and it worked:

1. inside Windows 7, open command prompt with administrator privileges

2. type "bcdboot c:\windows /s c:" (should return that boot files were successfully created)

3. once again inside Windows 7, open Disk Management GUI, locate the main C:\ partition and mark that active instead of the hidden system partition.

4. reboot to confirm that everything is ok.

5. back in Disk Management you can now freely delete the hidden system 100MB partition which is no longer being used.

6. After this I used Partition Manager (free version) to expand the C:\ partition to use up all the unallocated space. I'm guessing similarly you can make a ghost/Acronis true image and then restore it back to fill the empty space as well.

My System SpecsSystem Spec
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10 Dec 2009   #22

Windows 7 Professional x64
 
 

What would happen if I deleted the system partition with GParted? Could I then repair the install with repair tools?
My System SpecsSystem Spec
10 Dec 2009   #23
Microsoft MVP

 

Just delete the 100mb using bootable Partition Wizard, Resize/Move Windows 7 into its space, boot into the Windows 7 DVD and run Startup Repair 3 times.

This is not the repair offered when you first boot DVD Repair console, but click through to Recovery tools list and choose from the list Startup Repair and run it 3 separate times as it attempts to repair and then rewrites MBR to Windows 7 partition.
My System SpecsSystem Spec
.


10 Dec 2009   #24
jav

Windows 7 Ultimate x86 SP1
 
 

Quote   Quote: Originally Posted by gregrocker View Post
Just delete the 100mb using bootable Partition Wizard, Resize/Move Windows 7 into its space, boot into the Windows 7 DVD and run Startup Repair 3 times.

This is not the repair offered when you first boot DVD Repair console, but click through to Recovery tools list and choose from the list Startup Repair and run it 3 separate times as it attempts to repair and then rewrites MBR to Windows 7 partition.
hmm.. was fine after first startup repair?
Should I run 2 more times anyway?
My System SpecsSystem Spec
10 Dec 2009   #25

Windows 7 Professional x64
 
 

Quote   Quote: Originally Posted by jav View Post
Quote   Quote: Originally Posted by gregrocker View Post
Just delete the 100mb using bootable Partition Wizard, Resize/Move Windows 7 into its space, boot into the Windows 7 DVD and run Startup Repair 3 times.

This is not the repair offered when you first boot DVD Repair console, but click through to Recovery tools list and choose from the list Startup Repair and run it 3 separate times as it attempts to repair and then rewrites MBR to Windows 7 partition.
hmm.. was fine after first startup repair?
Should I run 2 more times anyway?
No. If it works, you're good.
My System SpecsSystem Spec
10 Dec 2009   #26
jav

Windows 7 Ultimate x86 SP1
 
 

Thank you
My System SpecsSystem Spec
24 Feb 2010   #27

Windows 7 Professional x64
 
 

I found a way to delete the system reserved partition. Simply delete the partition in Diskpart, mark the OS partition as Active, and run Startup Repair.

Not sure if this has been mentioned...
My System SpecsSystem Spec
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 Removing 100MB system partition - no re-install needed




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