This article is based on an article from the Japanese edition of Engadget and was created using the translation tool Deepl.
Immediately after the release of macOS Big Sur on November 13, there were a number of reports of some 13-inch MacBook Pro's being rendered inoperable by the update. Apple has released an official support document on this matter with instructions on how to deal with it.
Most of these issues have been complained about by users of Late 2013 and Mid 2014 models of 13-inch MacBook Pro in Apple's official support community and elsewhere. Generally, it is common for the machine to display a black screen and stop working during installation.
Apple released a support document titled "If you can’t install macOS Big Sur on certain 13-inch MacBook Pro computers from 2013 and 2014" on November 19. The document explains how to solve the problem if the update cannot be installed or cannot start up properly with a blank screen.
The steps are as follows
Press and hold the power button on your Mac for at least 10 seconds, then release. If your Mac is on, it turns off.
Unplug all external devices from your Mac, including any displays and USB accessories, and remove any card inserted in the SDXC card slot. Then turn your Mac on.
If the issue persists, reset the SMC as described for notebook computers with a nonremovable battery.
If the issue persists, reset NVRAM or PRAM.
If these solutions don't work, the company asks you to contact Apple Support for further assistance. It also states that "This article will be updated as more information becomes available.," and it seems that the cause of the problem has not been fully resolved.
However, the above user report also mentions that resetting the SMC and NVRAM did not help, so it is unclear to what extent it works. Owners of the affected MacBook Pro models should avoid updating to Big Sur until a more definitive version is available.
This article is based on an article from the Japanese edition of Engadget and was created using the translation tool Deepl. The Japanese edition of Engadget does not guarantee the accuracy or reliability of this article.