Jun 10, '05 10:04:00AM • Contributed by: Anonymous
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Access FireWire drives connected to a shut-down G5
Jun 10, '05 10:04:00AM • Contributed by: Anonymous
Not sure how this one is to be classified, but while getting ready to boot my G3 PowerBook into Target Disk mode, I found something interesting. By connecting the PowerBook to the front of the G5 (the G5 is off) with a 6-pin FireWire cable, and then turning on the PowerBook, I was able to access and mount the two chained Firewire drives connected to the back panel of the G5. I guess the front and rear FireWire ports are somehow connected and still drawing power even when the G5 is "off."
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Access FireWire drives connected to a shut-down G5
I noticed something similar just a couple of days ago when I was booting an iMac G4 into target disk mode. My setup was iMac G4->Lacie d2 Hard drive (powered off, i.e. the blue light was off)->iMac G5. Even though the Lacie wasn't on (it was plugged in, however), the iMac G4 still showed up on the iMac G5 as an available volume after I booted it as a target disk. It would seem then that all firewire chipsets do this.
Access FireWire drives connected to a shut-down G5
General case:
Access FireWire drives connected to a shut-down G5
Something has changed with the way FW remains powered even if the Mac is off or in sleep mode. My PowerMac G4 has no power with its FW when in sleep mode. My iPod will not even charge. However with my iMac G5 has power with its FW when in sleep mode. My iPod remains in charge mode. Anyway I find it more convenient that the FW remains powered.
Access FireWire drives connected to a shut-down G5
This isn't really surprising. FireWire is a bus model, so anything plugged into the bus can talk to anything else on the bus.
optical drive via target disk, not all machines
Not all machines' optical drives can be accessed via target disk mode.
Allows to circumvent the DVD region codes
This seems to allow to circumvent the DVD region codes. A DVD inserted into a Powermac did not play because the region code was not set yet (and without an Admin password I could not set it), booted in Target disk mode the DVD drive did not ask for any region codes.
Access FireWire drives connected to a shut-down G5
I have noted a similar behavior. I have two machines with an internal network using TCP over Firewire (TCPoFW). It's great it allows blazing fast transfers between the machines. One problem I've had is sometimes my iPod will mount on the wrong machine. Although I have never tested this with the machine in betwen turn off. This behavior seamed to have diminished as of Tiger. Although, it still happens from times to times... |
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