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Windows 7: another how to undo dual boot on 2 drives

06 Sep 2010   #1
jim4366

7 Home Premium 32bit
 
 
another how to undo dual boot on 2 drives

After a rash of hard drive failures first on d drive, then on c, I finally have things working again. But with dual boot. My choices are win7 and win7. The first choice works, the second fails to boot.
No idea how this happened. Fustration was setting in.

another how to undo dual boot on 2 drives-capture.png

Can I do as described elsewhere? ie mark c drive as active in disk management, then run startup repair 3 times?
My question is, do I unplug the d drive, or just leave it in?
D is just for documents, should I do anything to clean it up?
thanks




My System SpecsSystem Spec
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06 Sep 2010   #2
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello Jim.





If C: (Disk 2) is the drive with the OS you want to keep and have it booting independently of the other then yes disconnect the other D: (Disk 0) drive and mark C: as active and do the 3 startup repairs with the restarts.

If there is no OS on D: that you need to use then use the snip below to see how to mark it "inactive", while it's still connected, then disconnect it for the repairs; so it won't cause issues when it's re-connected.
click to enlarge
another how to undo dual boot on 2 drives-inactive2.jpg


My System SpecsSystem Spec
06 Sep 2010   #3
gregrocker

 

Follow Barefoot's advice to mark Data drive Inactive using Diskpart, then mark Win7 drive Active, before unplugging data drive to run Startup Repair up to 3 separate times.

In addition I would swap the data drive's cable to the Win7 HD so it becomes DISK0 since this problem started because Win7 installer writes the System MBR to the first available Active drive. Be sure Win7 HD then is set as HD to boot first in BIOS setup, after DVD drive.
My System SpecsSystem Spec
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06 Sep 2010   #4
jim4366

7 Home Premium 32bit
 
 

Good stuff. Thanks so much. Well, when I swapped out the drive cables, the F drive labelled 500GB IDE got in ahead and became Disk 0, not my system c drive. It is an IDE drive whereas the other 2 are Sata. Finally, I just disconnected it, went ahead with the repairs mentioned above. Everything went fine.

another how to undo dual boot on 2 drives-capture.png

So far so good, everything works. Now that third IDE drive, I was thinking of using it as a Win 7 backup drive. Can I just plug it back in now?


My System SpecsSystem Spec
07 Sep 2010   #5
gregrocker

 

Yes, should be no problem as long as it doesn't bump WIn7 HD out of first HD to boot again.

If so, just set Win7 to boot first in BIOS setup (after DVD drive).
My System SpecsSystem Spec
07 Sep 2010   #6
jim4366

7 Home Premium 32bit
 
 

This works. And C:system is staying put at Disk 0.
In the future though, I'm not going to mix up sata and ide drives unless maybe the operating system is on an ide drive. And it also wasn't a good idea to make my system drive and data drive the exact same make and model, because now I can't tell the difference in bios. I have to guess at which is which by the order they come in.
It's been a good learning experience.
Thanks all.
My System SpecsSystem Spec
07 Sep 2010   #7
Bare Foot Kid
Microsoft MVP

W 7 64-bit Ultimate
 
 

Hello again Jim!





Glad to see you got it sorted and thanks for the update.
My System SpecsSystem Spec
07 Sep 2010   #8
gregrocker

 

Learning is the most important part of it. Good work.
My System SpecsSystem Spec
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 another how to undo dual boot on 2 drives




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