UPS prevents from starting

I have a 27-inch iMac mid-2010 running El Capitan with all updates installed. When I've been updated to Yosemite to El Capitan I had to unplug the USB from my diet without interruption to the iMac to boot. Then a few weeks later a update to El Capitan corrects this problem. Now, after you have installed the latest version of the BONE two days ago, the problem is back. Visually, the 'progress bar' moves on the screen for more at halfway then stops. If I have the UPS USB cord, the iMac will stop at this stage. If I unplug the USB cable from the UPS, the break is followed by a successful boot. I hope that Apple can find and fix it again as they did before.

Send feedback to Apple. They will not respond, but at least know that there is a problem. If enough people send feedback, it can become the problem solved as soon as possible.

Your comments

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Tags: Mac OS & System Software

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