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Apple Computing Products:
macOS - Operating System
Drives not mounting
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<blockquote data-quote="MacInWin" data-source="post: 1696254"><p>OK, neither of those threads really talk about any problem with mounting drives, except that in the first the drives that pull USB power and want more than the USB standard 500ma don't get that much power any more. So they don't mount because they aren't spinning. That problem is not really Apple's as the USB standard says no device should expect more than 500ma from the port. External drives with power supplies don't seem to have the problem. Ditto for drives plugged into well engineered powered hubs.</p><p></p><p>The second discussion is about drives unmounting while the machine is sleeping and not remounting when it wakes or doing so erratically. An SMC reset seems to fix that for most users. So the comment that, "On Apple Discussions, this is a known issue that hasn't been fixed yet on 10.11.2." was not really correct. I didn't see any reference to SIP being a problem at all in those threads.</p></blockquote><p></p>
[QUOTE="MacInWin, post: 1696254"] OK, neither of those threads really talk about any problem with mounting drives, except that in the first the drives that pull USB power and want more than the USB standard 500ma don't get that much power any more. So they don't mount because they aren't spinning. That problem is not really Apple's as the USB standard says no device should expect more than 500ma from the port. External drives with power supplies don't seem to have the problem. Ditto for drives plugged into well engineered powered hubs. The second discussion is about drives unmounting while the machine is sleeping and not remounting when it wakes or doing so erratically. An SMC reset seems to fix that for most users. So the comment that, "On Apple Discussions, this is a known issue that hasn't been fixed yet on 10.11.2." was not really correct. I didn't see any reference to SIP being a problem at all in those threads. [/QUOTE]
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Apple Computing Products:
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Drives not mounting
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