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Windows 7: Please help me change the active partition

09 Dec 2011   #1

windows 7

My ultimate goal is to eliminate drive C altogether. Win Xp is installed on C ,Win 7 is installed on E, and I would like to set e as the active partition, remove all the files from C and uninstall xp. Please help me out!
I have attached a screenshot of my Disk Management.

My System SpecsSystem Spec
09 Dec 2011   #2

Windows 7 Ultimate SP1 64-Bit

Welcome to Windows Seven Forums.

Please read this tutorial on how to use Partition Wizard: Partition Wizard : Use the Bootable CD

However, before you go down this road I would clean up your current disk layout.

Personally, I would wipe the hard drive completely and clean install Windows 7. The reason I suggest this is because it is recognised as best practice to install your operating system to a primary drive rather than a logical volume.

During the install, Windows will want to create a system reserved partition of 100 MB, which will hold the master boot record and will become the active partition.

Windows will then be installed and will automatically give the partition it is installed on drive letter C.
My System SpecsSystem Spec
09 Dec 2011   #3


Does Win7 itself show as C drive when you boot into it? It should do this unless it was incorrectly installed from the XP desktop.

If not then I would definitely clean reinstall it from boot after deleting all partitions on the HD: Clean Install Windows 7

If so then you can use free Partition Wizard bootable CD to convert Win7 partition to Primary, rightclick to Modify>mark it Active, Apply steps. Then boot into Win7 DVD Repair console or Repair CD to Startup Repair - Run 3 Separate Times.

Once it starts on its own and lists the System Active flags, then you can boot back into PW CD to delete XP partition, rightclick Win7 to resize and slide its left grey border all the way to the left to move Win7 into the preferred lower HD space, then slide right border where you want it.
My System SpecsSystem Spec

09 Dec 2011   #4

windows 7

No Win 7 comes up as Drive E, Win XP was first installed on drive C. It became unbootable in the sense that I would get a blue screen eventually. I have all my files on Drive E, and would prefer to keep them rather than reinstalling altogether. Is there a way around this ?
My System SpecsSystem Spec
09 Dec 2011   #5


The only way WIn7 when booted will see itself as anything but C is if the Win7 installer was run from an OS and not booted.

Yes, you can continue to use WIn7 on E and delete XP if that is what you want.
My System SpecsSystem Spec
09 Dec 2011   #6
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

If you want to get rid of XP and just keep Win7, you have a couple of problems:

1. You XP partition contains the bootmgr which also boots Win7. if you delete the XP partition, Win7 will not boot any more. You would have to move/fix the bootmgr on the Win7 partition.

2. Your Win7 partition is not a primary partition. If you want to make it active, you have to first make it a primary partition.

If you want to do that and need help, post back.
My System SpecsSystem Spec
09 Dec 2011   #7

windows 7

Yes, I would like to make it an active partition. How do I move the Bootfiles ?
My System SpecsSystem Spec
09 Dec 2011   #8


Boot free Partition Wizard bootable CD, rightclick on Win7 partition to Modify>Convert to Primary, click OK.

next rightclick on Win7 partition again to Modify>Set to Active, click OK.

then click on Win7 HD to highlight it, from Disk tab select Rebuild MBR, OK, Apply all steps.

If Win7 doesn't start at reboot, boot into Win7 DVD Repair console or System Repair Disk to Startup Repair - Run 3 Separate Times.

Once Win7 starts on its own, confirm in Disk Mgmt it holds the System Active flags.

If you want to recover the XP HD space into Win7, boot PW CD again to rightclick XP to Delete, OK. Then rightclick Win7 partition to Resize, slide left grey border to the left to take up XP space, OK, Apply all steps. You may need to Rebuild MBR again or run Startup Repairs if WIn7 doesn't start.

Back up your files and a WIn7 backup image beforehand.
My System SpecsSystem Spec
09 Dec 2011   #9
Microsoft MVP

Vista, Windows7, Mint Mate, Zorin, Windows 8

1. Download and burn this program to CD - it is the last entry on the webpage.

2. Load this CD (you may have to change the bootsequence in the BIOS)

3. Highlight your XP partition, click on the Partition tab and go to Modify, then on deactivate

4. Highlight your Win7 partition, Partition tab > Modify > activate -- then click Apply under "Operations pending" on the bottom left.

5. Now you can fix your bootmgr on the Win7 partition: Bootmgr is missing - Fix

Hmm, just saw that Greg had explained that already - better read that
My System SpecsSystem Spec
09 Dec 2011   #10

windows 7

Thanks for all the input! I have set the Windows 7 HD as Primary and active. I highlighted the win 7 HD, but I cannot select anything from the Disk Menu.
My System SpecsSystem Spec

 Please help me change the active partition

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