This is why bug fixes were invented in the first place.
Apple on Monday released an updated macOS Big Sur 11.2.1 installer that now properly checks for sufficient free space to complete the installation process.
The revision patches a critical bug in previous macOS Big Sur installers that could result in installation failure and data loss.
Similar to previous installers, the new installer now properly checks for sufficient disk space. If there isn’t enough space, it will halt the installation process and inform the user as to how much disk space is needed.
The bug reportedly impacted past versions of the macOS Big Sur installer, and appears to date back to the first shipping versions of macOS Big Sur that launched in November 2020.
Prior to the fix, if the installer ran out of space, the process would result in a loop and possible data loss.
Macs required at least 35.5GB of free space to upgrade to macOS Big Sur, not including the 13GB installer itself.
If you’ve seen this issue on your end, please let us know about your experience in the comments.
Via AppleInsider and Mr. Macintosh