After noticing several reports from users on the web, Mr. Macintosh found out that macOS Big Sur installer isn’t checking whether the Mac’s internal storage has enough free space. As the system initiates the update process, the Mac becomes unresponsive and data can be permanently corrupted.This 35.5GB comes on top of the 13GB required for the macOS Big Sur installer, resulting in a total of 48.5GB. That's quite a lot considering many of today's lower-end Macs feature just a 256GB SSD.
Apple says upgrading to macOS Big Sur for the first time requires at least 35.5GB of available storage — and this doesn’t include the 13GB macOS Big Sur installer. Unfortunately, even if your Mac does not have 35.5GB of storage available, macOS will try to install the Big Sur update, and that’s when users may lose all their data.
Apple macOS Big Sur update can cause data loss if your lack disk space
Posted on Tuesday, Feb 09 2021 @ 09:22 CET by Thomas De Maesschalck