This is a udev bug - renaming /lib/udev/rules.d/85-hdparm.rules makes these drives work again. Further information can be found on this discussion on linux-usb: http://marc.info/?t=126927150300011&r=1&w=2
** Package changed: linux (Ubuntu) => udev (Ubuntu) -- ATA pass-through commands preventing external HDD to be mounted https://bugs.launchpad.net/bugs/515023 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
