I think blacklisting doesn't work for the modules in the initrd (as commented in bug #72765), and libata will get loaded anyway. You can try removing the libata module manually from your initrd.gz, see https://wiki.ubuntu.com/CustomizeLiveInitrd for how to modify an initrd.
I think blacklisting doesn't work for the modules in the initrd (as commented in bug #72765), and libata will get loaded anyway. You can try removing the libata module manually from your initrd.gz, see https:/ /wiki.ubuntu. com/CustomizeLi veInitrd for how to modify an initrd.