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Apple Computing Products:
macOS - Operating System
Target Mode Unreliable
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<blockquote data-quote="AluminumBrains" data-source="post: 1610717" data-attributes="member: 334858"><p><strong>Seagate Hard Drive fails running 10.8 on MBPro mid 2010, would not launch recovery partition, and fails to repair in Disk Utility</strong></p><p></p><p>1- With the problem drive still in its original machine (MBPro, 10.8), target mode (with FW800) would show the drive in DU but it fails to mount.</p><p></p><p>2- With the drive in an external case with USB connection, the drive showed in DU as non-repairable but DID mount, and data was copied.</p><p></p><p>3- The MBPro is not the problem, because with a new drive in the same target mode set up in (1) above, a properly working drive mounted fine in target mode.</p><p></p><p>4- The FW800 cable is not the problem, because it worked fine with other drives.</p><p></p><p>5- With the NewerTech universal drive adaptor, the drive failed to mount (http://eshop.macsales.com/item/NewerTech/U3NVSPATA/) .</p><p></p><p>6- The case that the drive mounted through was this: http://eshop.macsales.com/shop/USB2/OWC_Express</p><p></p><p>Conclusion: target mode mounting can be unreliable in troubleshooting, and some cases don't work as expected under certain situations.</p><p> I will try Disk Warrior directory repair first and if no luck I will format the drive. My guess is no mechanical damage, but only time and testing will tell.</p></blockquote><p></p>
[QUOTE="AluminumBrains, post: 1610717, member: 334858"] [B]Seagate Hard Drive fails running 10.8 on MBPro mid 2010, would not launch recovery partition, and fails to repair in Disk Utility[/B] 1- With the problem drive still in its original machine (MBPro, 10.8), target mode (with FW800) would show the drive in DU but it fails to mount. 2- With the drive in an external case with USB connection, the drive showed in DU as non-repairable but DID mount, and data was copied. 3- The MBPro is not the problem, because with a new drive in the same target mode set up in (1) above, a properly working drive mounted fine in target mode. 4- The FW800 cable is not the problem, because it worked fine with other drives. 5- With the NewerTech universal drive adaptor, the drive failed to mount (http://eshop.macsales.com/item/NewerTech/U3NVSPATA/) . 6- The case that the drive mounted through was this: http://eshop.macsales.com/shop/USB2/OWC_Express Conclusion: target mode mounting can be unreliable in troubleshooting, and some cases don't work as expected under certain situations. I will try Disk Warrior directory repair first and if no luck I will format the drive. My guess is no mechanical damage, but only time and testing will tell. [/QUOTE]
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Apple Computing Products:
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Target Mode Unreliable
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