This results in significant performance improvements to launch time.
When loading, dyld will first check if is in the share cache, and if it is will use that pre-bound version instead of opening, mapping, and binding the original file. In previous macOS versions (at least in macOS 10.15 Catalina, from first-hand experience), these files were located in /var/db/dyld/ and could be recreated with this command (see for example Trying to force update_dyld_shared_cache but having some errors): sudo update_dyld_shared_cache -root / -forceīut update_dyld_shared_cache is deprecated in Big Sur (running the command has as only output This tool is deprecated.).įurthermore, the files in /System/Library/dyld/ no longer seem to be cache files in the sense that they store commonly used shared libraries (from man update_dyld_shared_cache): No, in Big Sur i t's not safe to delete them (from the screenshot in your question, I see you are on Big Sur).
Is it safe to delete these 4 files in the folder called dyld ( /System/Library/dyld/)?
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