Messages in this thread | | | Date | Sat, 10 May 2008 17:31:53 +0200 (CEST) | From | Stefan Richter <> | Subject | Re: Hack to fix not working spindown over Firewire |
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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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