Install Recalbox on HDD Partition x86-64bit

[5p4rtan]

Hi There!
Im actually running Libreelec with Emulationstation in DualBoot and its working fine.

Now I found Recalbox and loved it for the first minute
I got my boot stick working, but now I would love to replace my ubuntu/emulationstation with RecalboxOS.
I tried to compile a recalbox-buildroot like discribed here but after 9h it exits with errors.
I now try to compile the recalbox-rescue...

But in my little understanding of operation systems, isnt it possible to just copy the usb content to appropriate partitions with eg. parted magic?

Im actually not able to bind the usb into my grub menu and therefore cant boot into it from kodi/libreelec...

Thanks in advance!

And btw: GREAT JOB!! (y)