I've tried to make an USB bootable Gentoo InstallCD, but when the booting procedure starts it hangs on "Looking for the cdrom" then "Attempting to mount media:- /dev/sda1" "Media not found" "No bootable medium found. Waiting for new devices..." "Could not find CD to boot, something else needed!" "Determining root device..." "Could not find the root block device in ." The problem is that some months ago i've tried to do the exact thing with an older version of Gentoo InstallCD and it worked... Sorry for my bad english...
*** This bug has been marked as a duplicate of bug 407369 ***