Solved Repair Dual Boot Win 8.1/Win 7

I had my system set up for Dual boot (on separate hard drives) for both Win 8.1 and Win 7. Win 8.1 developed a problem and unfortunately the only back up I had (my fault) was for Win 8 before I installed Win 7 and the dual boot.

I reinstalled from the backup and then updated Win 8 to 8.1. Both the Win 8.1 64 bit and the Win 7 64 bit work OK but the dual boot is now missing in Win 8.1.

Is there any way of repairing/creating the dual boot, either in Win 7 or Win 8, without using BCD Edit?

Jack

I have used EasyBCD from NeoSmart Technologies to dual boot several iterations of Windows and it always works. It is a free download, the current version is EasyBCD 2.2. I currently use it to dual boot Windows 7 and Windows 8.1 Pro and it works fine.
Please get familiar with it using their documentation before using.

Good Luck!

I'd like to do it within Windows and not use a 3rd party program, if possible.

I'm also aware of the "bootrec.exe" command but can't figure out how to get to that repair point. Pressing F8 at bootup does nothing.

Boot the Windows 8.1 DVD/USB disk or Repair USB disk.
http://www.eightforums.com/tutorials/2269-system-recovery-options-boot-windows-8-a.html
Open> command prompt.

Use the Rebuild BCD in this tutorial:
Use the Bootrec.exe tool in the Windows Recovery Environment to troubleshoot and repair startup issues in Windows

theog, thanks. I just logged on to report that is what I did. Used my Win 8 install disc to get to "Repair" and the command prompt to run bootrec.exe and fix the BCD.

I should have known/thought of that. Instead I was trying to get into the repair without the disc and couldn't.

Jack

You are welcome.