Attempted to boot into Safe Mode with Shift key pressed (= same behavior: stalled progress bar).Here’s what I've tried and observed so far: I waited as much as 10 hours, but it doesn't move a single pixel.įor cross reference/examination I have another 13" MBPR (Early 2015, 2.7 GHz i5) with 512 GB SSD running Catalina perfectly fine.
Let’s call this SSD A.Īfter the update the MacBook doesn’t boot up properly anymore: Apple logo and progress bar appear, everything looks normal at first, but at 50% the progress bars stalls. It has a 512 GB SSUBX Apple Samsung OEM SSD (Model MZ-JPV5120/0A4).
I have the 13" MBPR (Early 2015, 2.9 GHz i5) of my 78 year old father here, which is kind of dead after he – if he recalls correctly – performed an update from Big Sur 11.x to Big Sur 11.y (he grabs every update he gets offered, so unfortunately he doesn't pay much attention to the details). I've heard quite a few stories of Big Sur bricking older MacBooks, but I'm not quite sure in which way precisely they get bricked (motherboard or just SSD), so question is whether the following story fits into those reports:
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