No dual boot menu at all?!

Hello,
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I recently (clean) installed Windows 10 on a new SSD. Windows 7 resides on my first drive.

1) I first set the USB to boot from;

2) Began to install Windows 10;

3) First snare: upon first reboot, after removing the USB, the system just started my old Windows 7 (!). (I expected a dual boot menu there.)

4) Rebooted, set SSD to first disk, and finished installing Windows 10;

5); Tried to add boot menu later (both in Windows 7 and Windows 10), using the Advanced System Settings, to no avail: neither OS sees another boot partition.

Question, how can I dual boot, after all?!

Thanks.

Add the missing entry with EasyBCD

Download EasyBCD 2.2

Boot into Windows 10, Open disk management, take a note on the drive letter of the other Windows 7 then Open Admin Command and type:
bcdboot x:Windows
Where x is the drive letter of Windows 7.

Add the missing entry with EasyBCD

Download EasyBCD 2.2

Thx. I remember that program from a decade or so ago, LOL. I'll check it out.

I just hope, when I boot from Windows 10 (second disk), Windows will really see it as the first disk (else my system could be hosed)

Boot into Windows 10, Open disk management, take a note on the drive letter of the other Windows 7 then Open Admin Command and type:
bcdboot x:Windows
Where x is the drive letter of Windows 7.

Will try that too, Thx! You guys are great!

Boot into Windows 10, Open disk management, take a note on the drive letter of the other Windows 7 then Open Admin Command and type:
bcdboot x:Windows
Where x is the drive letter of Windows 7.

Thanks, that worked!!

I don't get the pretty Windows 10 boot menu that way, but I can live with that.

Thanks, that worked!!

I don't get the pretty Windows 10 boot menu that way, but I can live with that.

In Windows 10, From Admin Command:
bcdboot %windir%
You should get a GUI Boot Windows

In Windows 10, From Admin Command:
bcdboot %windir%
You should get a GUI Boot Windows

And thx again!