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Daisy-chain FireWire devices in Target Disk Mode Storage Devices
This may be obvious, but I'd never thought of it before. Recently I had my G5 in Target Disk Mode, hooked up to my PowerBook, and I wanted to sync my iPod (3rd generation) with the PowerBook. However, I was flummoxed by the lack of an available FireWire port, since the only one was in use. Since FireWire devices can be daisy-chained, though, I decided to try hooking the iPod up to the other FireWire port on the G5, and lo and behold, it mounted just fine on the PowerBook.

I haven't actually tried this with any other devices, but I assume it would work just as well with external drives, cameras, etc.
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Daisy-chain FireWire devices in Target Disk Mode
Authored by: lancermit on Jul 13, '07 08:36:54AM

Well, I just found out that the internal optical drives of iBooks, PowerBooks, etc. ALSO mount in FWTDM. Recently, I used the Combo Drive in my iBook, which was hooked up in Target Disk mode, to install Tiger on a Mac with only a CD drive.

Works Great! How does that work? The optical drive isn't on a firewire bus. ???



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Daisy-chain FireWire devices in Target Disk Mode
Authored by: n3t0x on Jul 16, '07 11:11:04AM

Can you use FWTDM to burn dvd/cd's?? everytime i insert a blank DVD on the TDM mac my other mac will detect the HDD of the FWTDM Mac, but not the blank DVD inside it... Is there a way to do this??



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Daisy-chain FireWire devices in Target Disk Mode
Authored by: hamarkus on Jul 13, '07 08:40:33AM

Not only can you do that, you can also use the optical drive of the machine in target mode.



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Crazy FireWire story
Authored by: sladuuch on Jul 13, '07 08:45:17AM

One of the nutsiest things I've ever seen happen with two computers was a result of accidental FireWire daisy-chaining. My friend was editing video in FCP located on an external hard drive hooked up via FW800. I happened to be editing video at the same time on my own machine in iMovie. All of the sudden, iMovie flipped out and began to display the contents of his screen as a video capture source! We were floored--until we realized that my computer had been left connected to his hard drive via FW800 as well. Then it hit us that the daisy-chaining effect had made iMovie believe that a FireWire camera had been plugged in! The coolest part was that I could see on my screen the edits he was making in real-time. Bizarre and awesome.



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Crazy FireWire story
Authored by: CrazyJack on Jul 13, '07 02:03:23PM

Yes, crazy things can happen. I once had my powerbook connected to my desktop with a firewire-cable and tcp/ip over firewire. While copying huge files I put my iPod in the Dock (connected to my desktop) to charge the battery.

What happened then was that my desktop started syncing the iPod and afterwards disconnecting it, while simultaneously the powerbook mounted the iPod as well, starting itunes etc. This eventually corrupted the disk to the level that I had to restore the iPod from scratch and re-sync my whole library....



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Daisy-chain FireWire devices in Target Disk Mode
Authored by: Zaphod42 on Jul 13, '07 12:07:19PM

be careful not to plug in any usb or firewire devices into the mac that's booted into OS X when you have another mac connected via TDM!!!!

I did this to back up an older ibook that didn't have usb2 and it resulted in every file getting corrupted as it was copied off the TDM machine through my computer into the USB HD.

apple's tech article only mentions not to plug in any other FW drives, doesn't say anything about usb, which sucks.



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Daisy-chain FireWire devices in Target Disk Mode
Authored by: general_ludd on Jul 13, '07 08:56:14PM

Recently I used an external FireWire as a "bridging" device between two computers that were two far apart to be connected with the firewire cables I had on hand. The drives on the machine in target disk mode mounted fairly slowly compared to how they would mount with a direct connection. I have successfully connected and used CD/DVD, Zip and other devices on the ATA/SATA or SCSI bus on a machine in target disk mode. (I suppose I could use four or five devices in target disk mode to reach an even longer distance, but maybe a longer cable would be a worthwhile expense at that point)

I use target disk mode to isolate hardware problems as well. (Is a computer's quirky behavior due to a bad drive, RAM, mainboard, etc...). This is especially helpful with eMacs since replacing a faulty drive in one is as close to brain surgery as I ever want to get. It's much worse than cracking an old Mac Plus, although slightly less dangerous health-wise, since you are less likely to brush against the high-voltage CRT components.



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