Grub doesn't load on Dual Boot

[starbuck]

It would have been good to know why "Replace Partition" failed though... maybe you could try again with starting calamares from the command line:
sudo calamares -d
and paste the output here if it fails again with "Replace partition".

[oldirtydufty]

Since I wasn't able to boot... which command line?

[oldirtydufty]

Ah... and I forgot to mention... I did something different this time: I also created a swap partition. That did not happen, when I used the "Replace Partition" option. But that shouldn't affect the installation of the bootloader.

[leszek]

Commandline means the terminal / Konsole app

[AJSlye]

Yes, use Konsole from the live media when your try another install.
Boot the live media and open konsole, then type:

Code:

sudo calamares -d