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Windows 7: Reinstall/Format Windows 7 on a multiboot system

14 Apr 2015   #1
L0GiN

Windows 7 Ultimate x64
 
 
Reinstall/Format Windows 7 on a multiboot system

Hello.
I have a Windows 7 on C: and Windows 8.1 on D:

A few weeks ago I received Black Screen of dead with mouse cursor (No Task Manager/Safe mode) in Windows 7, so now i want to get format drive C and do a clean install.
Should I just format drive C:? will i be able to boot windows 8?

Here's a screenshot of Disk Management. I know it's a mess.

Reinstall/Format Windows 7 on a multiboot system-3daczg56h.png




My System SpecsSystem Spec
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14 Apr 2015   #2
gregrocker

 

If you're sure that D is large enough for your Win7 needs, then yes you can just format it during booted Clean Reinstall
Windows 7.

If not then I'd move the data off of F, during install use the Drive Options pictures in steps 11/12 of Clean Install Windows 7 to delete both D and F, then create a New Win7 partition of the size you want, followed by a new F partition in the remaining space. Format both partitions, be sure to choose only D to begin install.

This should configure a Dual Boot with Windows 8. If not install EasyBCD (click Download - no Name or Email required) to add Windows 8 to a boot menu.
My System SpecsSystem Spec
14 Apr 2015   #3
L0GiN

Windows 7 Ultimate x64
 
 

Hi greg.
Thank you for your reply.
I did format C and installed Windows 7, but now Windows 8 is gone. Haven't tried EasyBSD yet, I will let you know about that.
My System SpecsSystem Spec
.

14 Apr 2015   #4
gregrocker

 

Was Windows 8 there before you reinstalled 7? Did you not touch its partition during reinstall? If not then it will still be there and needs only to be added using EasyBCD as I've already explained.

If that fails then you can run Windows 8 Automatic Repair
to start Windows 8 and add Windows 7 if it doesn't do it for you.
My System SpecsSystem Spec
15 Apr 2015   #5
L0GiN

Windows 7 Ultimate x64
 
 

Yes. Windows 8 was there.l've Added Windows 8 using EasyBSD. But when I boot Windows 8 it says "Windows cannot verify signature driver" and says sth about wiinload.exe. So I can't run Automatic repair.
1) How can I fix this?
2) How can I restore graphical bootloader now that I have no access to Windows 8.
My System SpecsSystem Spec
15 Apr 2015   #6
gregrocker

 

Run Automatic Repair from the Windows 8 disk System Recovery Options - Boot to in Windows 8

My System SpecsSystem Spec
16 Apr 2015   #7
L0GiN

Windows 7 Ultimate x64
 
 

Thanks greg.
There is no Automatic Repair in "System Recovery Options". There is a "Start up Repair" but when I select Windows 8.1 that I added manually, It says "The operating system you selected is not supported."

Refresh your PC and Reset your PC didn't work either.

EDIT: Reinstalled Windows 8, now both 7 an 8 works fine.
My System SpecsSystem Spec
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 Reinstall/Format Windows 7 on a multiboot system




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