Well, I have finally been able to install the LL 6.0, following the tutorial. 
Windows 10 is installed on /dev/sda
LL 6.0 is installed on /dev/sdb2
1) I've ignored the “no EFI partition warning”
2) The LL boot loader has been installed on /dev/sda, i.e. the drive with Windows 10 boot loader.
A satisfying end of a fruitful monologue! 
	
	
	
	
	
Windows 10 is installed on /dev/sda
LL 6.0 is installed on /dev/sdb2
1) I've ignored the “no EFI partition warning”
2) The LL boot loader has been installed on /dev/sda, i.e. the drive with Windows 10 boot loader.
A satisfying end of a fruitful monologue!
 
	
 
 

