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A workaround for a Firewire Target Disk Mode issue Apps
While trying to transfer loads of stuff from an old Mac to a new one via FireWire Target Disk Mode, for some reason the target Mac just would not mount on the desktop of the new Mac. I tried everything: different cables, different ports. I checked other computers -- they worked correctly. I even tried mounting the new Mac on the Old one -- that worked, too. But using the FireWire cable, the old Mac would not even show up in Disk Utility or Terminal.

On a whim I decided to hook up an external FireWire drive to the new Mac, then daisy-chain the old Mac to that drive. Presto! It worked, and it seemed to be just as fast as a direct connection.
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A workaround for a Firewire Target Disk Mode issue
Authored by: Zaphod42 on Aug 16, '07 10:30:00AM
be careful when plugging in other devices when using TDM. I guess daisy chaining works but if you have other devices plugged in (either FW or USB) to a computer that has a mac connected to it in TDM then anything copied off the TDM mac can get corrupted. I found that out the hard way.

http://docs.info.apple.com/article.html?artnum=58583
"Important: Unplug all other FireWire devices from both computers prior to using FireWire target disk mode. Do not plug in any FireWire devices until after you have disconnected the two computers from each other, or have stopped using target disk mode."

it doesn't mention corruption or USB, but thats what happens.

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A workaround for a Firewire Target Disk Mode issue
Authored by: ghay on Aug 16, '07 01:47:45PM
I don't know how old the 'older' mac was, but did you try 'hot-plugging' the old mac

http://docs.info.apple.com/article.html?artnum=75420




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A workaround for a Firewire Target Disk Mode issue
Authored by: Auricchio on Aug 16, '07 08:45:13PM

I was unaware of Apple's warning, but I've never had a problem.

I've run a few long data recoveries where the bad computer was in FTM, and I had an external drive connected to the FW bus to store the recovered data.

---
EMOJO: mojo no longer workin'



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A workaround for a Firewire Target Disk Mode issue
Authored by: MJCube on Aug 17, '07 08:21:00AM

If the old Mac was running OS 9.0.x, it has to be updated to 9.1 or 9.2 in order for TDM to interface with 10.4. A couple months ago I tried this with an old iMac G3 and got nothing, until I updated OS 9 on it, then it worked fine.



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A workaround for a Firewire Target Disk Mode issue
Authored by: blubbernaut on Aug 21, '07 10:02:53PM

Just a quick update in case anyone stumbles across this while searching.

The 'old' mac was an eMac - fully updated Tiger OS and firmware, so firmware and OS weren't the issue.

And I didn't have any problems with corrupted transfers either (I don't know if that was just luck, or if the caveat about daisy-chaining referred to above relates only to specific setups).

So this option is probably a quick fix to try before checking any of the other things.



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A workaround for a Firewire Target Disk Mode issue
Authored by: hokchun on Sep 11, '07 10:53:30AM

This hint worked in my case. I encountered exactly the same problem in my new iMac (2007). It worked with this daisy chain fix... Weird....



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A workaround for a Firewire Target Disk Mode issue
Authored by: thannon88 on Sep 20, '07 04:08:44PM

Thanks for posting this work-around. I just experienced the same problem on an eMac. I put the eMac into Target Disk Mode and its HD would not mount on a new Intel iMac. I tested cables, ports, other computers, etc. Nothing worked. The tests pointed towards some odd glitch in the eMac. So, I followed the suggested work-around and connected an external firewire drive to the iMac via FWire 800. Then I connected the emac to the external drive via FWire 400. Suddenly the eMac's hard drive mounted. I'm currently using Migration Assistant to copy the data off of the eMac.



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A workaround for a Firewire Target Disk Mode issue
Authored by: fulmar2 on Jan 18, '11 10:37:00AM

THANK YOU !!!



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