Translations:AMD64/FAQ/24/en
From Gentoo Wiki
Due to several differences between x86 (32-bit) and amd64 (64-bit) installations, it is impossible to upgrade this way. Please perform a fresh install using the AMD64 Handbook.
Due to several differences between x86 (32-bit) and amd64 (64-bit) installations, it is impossible to upgrade this way. Please perform a fresh install using the AMD64 Handbook.