I'd like to try Gentoo (again...). I know that many steps require a lot of configuration and much more time. I'd like to do something else on computer during long waiting, because of that I would like to install it using VirtualBox and then move it to an partition and use it as normal OS.
I know how to
chroot from live to HDD, "restore" GRUB bootloader. I need especially to know how to have my Gentoo installed to real HDD partition using VirtualBox.