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    SubjectRe: Hack to fix not working spindown over Firewire
    I wrote:
    > 1) FireWire to IDE or to SATA chipset
    > 2) start bit is honored:
    > "sg_start --stop" stops the motor and "sg_start" restarts it
    > 3) power condition field is honored:
    > "sg_start --pc=3" stops the motor and "sg_start --pc=1 restarts it
    > 4) peripheral device type claimed by the firmware
    > 5) vendor and model of the enclosure
    >
    >
    > 1) 2) 3) 4) 5)
    > bridge start pc PDT enclosure
    > --------------------------------------------------------------
    > INIC-2430 yes yes SBC AVLAB 2.5" Drive Kit
    > INIC-2430 yes yes SBC IOI FWB-IDE01AB, 1 HDD
    > INIC-2430 yes yes SBC IOI FWB-IDE01AB, 2 HDDs, JBOD
    >
    > OXFW911 yes yes RBC MacPower Icecube
    > OXUF922 yes yes RBC MacPower Icecube 800+
    > OXFW912 yes yes RBC MacPower Igloo
    > OXFW912 yes yes RBC VulcanTech DualDrive 2nd gen.
    > OXUF924DSB yes yes SBC MacPower Taurus, 1 HDD
    > OXUF924DSB no no SBC MacPower Taurus, 2 HDDs, JBOD
    >
    > PL-3507 no no RBC MacPower Prefect II ¹

    PL-3507 no yes RBC Mapower MAP-KC21C1 ²

    > TSB42AA9 no yes SBC DViCO MomoBay CX-1
    > TSB42AA9A yes yes RBC DViCO MomoBay FX-3A

    EFI firmware no no RBC Apple Mac mini x86 in target mode ³


    ¹) As mentioned, with firmware from MacPower.

    ²) Same firmware_revision as with Tino's disk, i.e. apparently firmware
    from Prolific. Same findings as Tino's:
    "sg_start --stop" is accepted but does not stop the motor.
    "sg_start --pc=3" or "=2" stop the motor.
    "sg_start --pc=1" or a read command restarts the motor.
    "sg_start" does not restart the motor.

    ³) "sg_start --stop" is accepted but does not stop the motor.
    "sg_start --pc=3" or "=1" fails with "invalid field in cdb".
    This is of course against the spec, because RBC includes power
    condition.

    Moreover, when OS X shuts down, it apparently sends START STOP UNIT
    without power condition to FireWire disks. Therefore we also should
    rather _not_ use power condition per default.

    I will send a patch which uses the power condition field only for
    PL-3507 and DViCO CX-1.
    --
    Stefan Richter
    -=====-==--- -=-= -=-=-
    http://arcgraph.de/sr/

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