And they'll correctly identify and mount an
elderly IDE that
doesn't specify its geometry when queried?
No, they won't. I've personally even had problems with modern on-board
IDE not working with older drives.
I wound up getting an old 486SX machine working with Linux on it just
enough to read and dump some of these older drives. It's a pain in the
posterior, but increasingly less and less hardware knows what to do with
drives that can't be autodiscovered by the BIOS.