Apple has released a revised macOS Big Sure 11.2.1 update. According to Mr. Macintosh, it checks to make sure there is enough available storage space on your Mac before installation starts.
To install the revised macOS Big Sur 11.2.1 upgrade, go to System Preferences > Software Update. However, it’s not available (or needed) if you’ve previously installed macOS Big Sur 11.2.1.
