Oprav si /etc/fstab.
Je tam /dev/ROOT, to sa musi zmenit na /dev/sda4. Asi bude nutne opravit aj dalsie polozky v fstab.
http://www.gentoo.org/doc/cs/handbook/handbook-x86.xml?part=1&chap=8#doc_chap1
to iste v anglictine: http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=1&chap=8#...