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Switcher Hangout (Windows to Mac)
Mac Pro, 2012, boot loop
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<blockquote data-quote="Alan_Reliant" data-source="post: 1743697" data-attributes="member: 387695"><p>Thanks for the reply Harry</p><p></p><p>I have to smile. I'll have yet another crack at fixing this piece of kit.</p><p></p><p>The drive with Leopard on it is a legacy drive, removed from the machine when it was upgraded some time ago, it's been in storage since then as a just in case option, it was fully functional when removed so I've been playing with in an attempt to get this machine to respond differently. </p><p></p><p>I've been inside and cleaned the heatsinks today, and replaced the CR2032 (2.99v/3.44v). </p><p></p><p>With no media in the ODD and the El-Capitan 320GB HDD in slot 1 using cmd+r I see the same result, the Apple on the screen and a progress bar that gets half way before a hard reset. With Ethernet connected I tried cmd+opt+r and see the same again. Incidentally, if I attempt to boot to recovery it's 2 mins until the restart, if just let system attempt to boot from the HDD it fails after just 30 seconds</p><p></p><p>The install media I've been attempting to work with are all copies, having said that they have all been used for various rebuilds installs and tests so know they're good.</p></blockquote><p></p>
[QUOTE="Alan_Reliant, post: 1743697, member: 387695"] Thanks for the reply Harry I have to smile. I'll have yet another crack at fixing this piece of kit. The drive with Leopard on it is a legacy drive, removed from the machine when it was upgraded some time ago, it's been in storage since then as a just in case option, it was fully functional when removed so I've been playing with in an attempt to get this machine to respond differently. I've been inside and cleaned the heatsinks today, and replaced the CR2032 (2.99v/3.44v). With no media in the ODD and the El-Capitan 320GB HDD in slot 1 using cmd+r I see the same result, the Apple on the screen and a progress bar that gets half way before a hard reset. With Ethernet connected I tried cmd+opt+r and see the same again. Incidentally, if I attempt to boot to recovery it's 2 mins until the restart, if just let system attempt to boot from the HDD it fails after just 30 seconds The install media I've been attempting to work with are all copies, having said that they have all been used for various rebuilds installs and tests so know they're good. [/QUOTE]
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Switcher Hangout (Windows to Mac)
Mac Pro, 2012, boot loop
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