Both my 2012 MBP and 2012 mini do it. If I recall that also happened a couple of years ago with a previous Mac OS. An update solved that issue.
So far on both of my updated-via-App Store Yosemite installs the progress bar is about the only issue (other than Apple celebrating the introduction of Yosemite by ruining the mini).
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Both my 2012 MBP and 2012 mini do it. If I recall that also happened a couple of years ago with a previous Mac OS. An update solved that issue.
So far on both of my updated-via-App Store Yosemite installs the progress bar is about the only issue (other than Apple celebrating the introduction of Yosemite by ruining the mini).