Getting files from a failed hard drive
September 18, 2009 By Jim RossmanA friend whose iMac's hard drive had apparently died called recently, wondering how she might access the files on the failed drive.
Because she was using a Mac, she had an option that PC users lack: Target Disk Mode.
You use a FireWire cable to connect the "target" Mac (the one with the bad drive) to a working Mac. Then power on the target Mac and hold down the "T" key as you hear the start-up chime. A large FireWire symbol will show up on the target Mac's screen, usually in less than 20 seconds, meaning you can let go of the "T" key. That FireWire symbol will appear in different spots every few seconds like a screen saver.
If everything is working correctly, the target Mac's hard drive should show up as a second drive on the working Mac. Once that happens, you can open the drive and copy the files.
I've had to do this plenty of times. The tricky part is when the target Mac's hard drive is too far gone.
I've seen Target Disk Mode appear to be working, but if you happen to be copying a file that's on a bad place on the drive, you might just lock everything up.
If that happens, the FireWire symbol on the target Mac's screen will stop moving around. Feel free to try again. Press and hold the target Mac's power key until the screen goes dark and boot into target mode again.
If copying the same file or folder locks up the Mac again, try some other files. Sometimes certain files might be a lost cause. Sometimes the entire target drive is a goner.
My friend didn't have the best outcome, but at least she knows what steps to follow next time.
I don't know of a similar mode on Windows PCs, though I have had friends pull a bad drive out of a PC and use a specialized USB adapter or external drive enclosure to mount the drive for copying.
___
(c) 2009, The Dallas Morning News.
Visit The Dallas Morning News on the World Wide Web at http://www.dallasnews.com
Distributed by McClatchy-Tribune Information Services.
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Sep 18, 2009
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Sep 18, 2009
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Sep 19, 2009
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Also when that fails. . . Data Rescue II worked for me. see the review here http://www.macwor...ue2.html and no I don't work for them, or get anything for this. P.s. people who don't pay for software and get to try all the stuff to see what really works and what's a rip off recommend data rescue II as one of the few worth the money they ask for.
finally, why is this on physorg when the info is freely available and has been for a long time in forums or just calling the mac support?
Sep 19, 2009
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I don't know what the rationale was for having the article here, but I don't have the newest Mac, and didn't know about this feature. I do, however, have a PC with RAID, where I lost all my unbacked data. Who knows what the logic was of sticking this in physorg. If you hadn't said anything, I still wouldn't know.
Sep 19, 2009
Rank: 5 / 5 (3)
And it works because when clusters go bad on a hard drive (PCs or Macs) it has a chance of effecting the Operating System (OS), or the user's data, or both. If the corruption affects the OS, then it will not boot, so this built-in Mac feature allows another Mac with its own hard drive with a good OS to boot up and "slave" the bad hard drive. Meaning that you can access the files but the OS files (some fo which are bad) are not needed for booting.
You can do the same thing with PCs. It's just harder because you need to physically take out the drive and put it in another computer rather than the easier Mac way of using a firewire cable...
It won't be long until PC motherboard makers follow suit.
Sep 19, 2009
Rank: 5 / 5 (2)
Isn't this supposed to be somewhat scholarly? Writing so vaguely taints my opinion of physorg.com's credibility.
Sep 25, 2009
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Sep 25, 2009
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Sep 25, 2009
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Sep 25, 2009
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You must not read much of variety on physorg then if this is all that has tainted your opinion of their credibility. This is just another internet media outlet that will put out anything if it gets them clicks.