Windows 10: Installed Windows 10, can't seem to boot old Windows 7 partition :(

Hi there, first post, thanks for the forum!

I just installed Windows 10 and I'm loving it, but I'd love to be able to boot my old Windows 7 partition. I can still see and access all of my Windows 7 files (it's just listed as the D: drive in the file explorer, the C: being my Windows 10 partition) but I don't see a 'choose OS' screen when I startup, nor do I see any other options in the msconfig boot menu or elsewhere. I'm attaching my discmgmt screen if that sheds any light...any help would be greatly appreciated *Smile Thanks!!

(I should note, I've searched and I can't find answers in other threads...slightly different issues others are having it seems)





:)

 

Bootable Partition Recovery

I finally figured it out. It seems that the Windows 10 re-install somehow un-marked the Windows 7 partition as an active partition. Once I marked the Windows 7 partition as active, then the Windows install disk's recovery tools (I actually do not remember
whether it was 7 or 10) were able to find the Windows 7 partition and add it to the Windows 10 boot configuration data. Now I can dual boot both operating systems.

 

Trying to delete a system partition on an HDD after reinstalling Windows 10 on an SSD

If the old HDD is still being used by Windows 10 then that is why you can't remove the partition. Remove the drive and see if Windows 10 still boots, if it doesn't then that is why you can't delete the partition. Did you install Windows 10 on the new SSD
with the old one still present by any chance.?

 

My friend pointed me to EasyBCD...did the trick. If anyone else has this issue, you just go to 'add entry' in the main menu of easybcd, select the drive your other OS is on (it was D*Smile for me, and the next time I restarted I could choose between the two.