radolx wrote:So if I use command: emerge -eNDva world my system sabayon will become gentoo? said simple
No. emerge -eNDva world will rebuild pretty much all, if not all (as in every one of them), the packages on your system. It could take a while depending on how fast your system is. My laptop is about 1.5 days. My i7 is a bit faster.
This will not make it gentoo, this will just make sure that all your software is playing nice and in theory would clean up any problems you have, such as what I've listed above.
This will not make your box gentoo. To do that you would have to remove the sabayon overlay, remove some packages - I don't know exactly which offhand - and then I'd do an emerge -eNDva world.