Ah! I can spin down the drive if I stop udev from processing events ... udevadm control --stop-exec-queue sdparm -6 -f --command=stop /dev/sdb
Info on my two external drives: A: Toshiba 10G MK1016GAP / HDD2152 (from an Apple Powerbook G4 circa 2001) in an Oxford Semiconductor Firewire / USB2 enclosure. B: OWC Mercury Elite Al Pro 500GB with Firewire 400/800 / USB2 -- external hard disk does not spin down https://bugs.launchpad.net/bugs/361446 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