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Windows 7: Removing the active partition in a dual boot setup

09 Mar 2010   #21
Microsoft MVP


This is one of the toughest ones, like bringing back the dead.

Try running [DVD drive]:\Setup

slmgr commands reference:

From here I would boot DVD and try Startup Repair a few more times, System Restore and the Command Line in DVD to see if you have any more luck.

Then I would wait for others' ideas including SIW2 who knows this stuff inside-out and should get my PM by morning to look at this.

My System SpecsSystem Spec
09 Mar 2010   #22


ok I dont get a checkbox---i just get a single line window that allows me to type in what I want to start...and typing in setup or setup.exe doesnt mane any difference either.
My System SpecsSystem Spec
09 Mar 2010   #23
Microsoft MVP


You said you might have gotten an Admin CMD. Can you run DVD from there?

Maybe there is a reason this is a top Google result for "Black screen not genuine Windows 7:"

Black Screen woes could affect millions on Windows 7, Vista and XP
My System SpecsSystem Spec

09 Mar 2010   #24


nope....same thing whether i run it from the new task window or if i go to the command prompt by typing cmd and then hitting CTRL SHIFT ENTER which takes me to the system32 folder by default(that's how i think im running it in admin mode?)---but cant run the setup.exe from there either.
My System SpecsSystem Spec
09 Mar 2010   #25
Microsoft MVP


I found where SIW2 helped recover a "Windows not genuine blank screen" after user had copied over a partition: Moving Win7 Partition to Another Drive

Later I believe he had another use the same fix for a situation similar to yours where the MBR had been recovered into Win7, explaining that the drive letters sometimes get messed up in rare cases.

Maybe using the Paragon rescue will help as it helped those two users with similar screens after a copy and MBR move operation.

I will check back at 10 am EST to see how it is going.
My System SpecsSystem Spec
09 Mar 2010   #26

Windows 7 x64

Have you tried making the XP partition active again? If you haven't deleted or moved it, a normal boot might be available.

I am also guessing the problem with the not genuine screen has something to do with the drive letter being changed.

Edit: I have duplicated the situation and the instructions. In fairness, my copy of Win 7 is not yet activated, so the Not Genunine message may not happen, even if this senario is exactly as yours.

The first picture shows the original install.

The Second (with red arrow) is after having converted the logical partition to primary and done the Startup Repair to move the system partition to Win 7. As you can see it shows both System and boot. The bcdedit window shows the bcd store after the repair.

The Third picture shows basically the same thing as the Second, but I used the bcdboot command to place the boot files into the Win 7 partition. Make note of the differences, since it appears to me using bcdboot to add the necessary files is better than running the Startup Repair. And kktk, the third picture is not really meant for your information, but others.

And the last one is the bcd store of the original install, notice XP, after I made the XP partition active again. This one is closer to the bcdboot restoration than the repair.

Attached Thumbnails
Removing the active partition in a dual boot setup-logical-1.gif   Removing the active partition in a dual boot setup-logical-2.gif   Removing the active partition in a dual boot setup-logical-3.gif  
Attached Images
Removing the active partition in a dual boot setup-logical-4.gif 
My System SpecsSystem Spec
09 Mar 2010   #27
Microsoft MVP


The best tool to view and edit the Disk Mgmt drive map now is free Partition Wizard bootable CD.

If you can post back a screen snap or list the partition status, we can help you more with that.
My System SpecsSystem Spec
09 Mar 2010   #28


I will get you a snapshot with the details(btw---how does one do that?).

But for now I can tell you what they look like.

The XP partition was left alone (as primary but not active).
The 7 partition was made primary and active--and booting from this gets me to the blank screen(not black but a plain blue one if that matters).

If I set the XP partition back to active and try and boot, I get boot errors---so I am assuming in the process of running the repair from the DVD---the bootmgr was corrected to boot correctly off the 7 partition and it somehow doesnt like going back and booting the way it was.

One thing I noticed was that the Drive letter assignment was not set to C.
that is neither the XP partition or the 7 partition was being assigned the "C" drive letter.
Since the XP partition was the first on the disk, I have tried deleting it(I can restore it if i need to), and shifting the location of the 7 partition to the front of the disk and also making it the only primary partition on the drive....but even that way, the drive letter "C" doesnt get assigned to it.

Maybe that's why I cant run some of those commands?---I dont think it would solve the licensing issue however.

So currently, the 7 partition is active and primary(gets drive letter G).
The other logical drives have drive letters D and E and the DVD drive is getting drive letter L.
My System SpecsSystem Spec
09 Mar 2010   #29
Microsoft MVP


This may confirm that the drive letter has slipped which was the problem where SIW2 helped with two similar previous cases using Paragon Rescue kit here: Moving Win7 Partition to Another Drive

Burn the rescue CD from link given there and follow his steps given to correct drive letter to what it should be.
My System SpecsSystem Spec
09 Mar 2010   #30


But is this causing the licensing issue? or will it get me past the errors where I am not able to launch the setup.exe from the new task window like you wanted me to ? and then I will have to re-activate again?
My System SpecsSystem Spec

 Removing the active partition in a dual boot setup

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