after upgrade macOS Catalina bugs
升级了macOS catalina后，碰到的 bugs？
macOS 10.15.5
https://www.apple.com/macos/catalina/features/
Dedicated system volume
macOS Catalina runs in a dedicated, read-only system volume — which means it is completely separate from all other data and helps improve the reliability of macOS.
专用系统卷
macOS Catalina 在专用的只读系统卷中运行-这意味着它与所有其他数据完全分开，并有助于提高macOS的可靠性。
MongoDB & macOS
https://www.cnblogs.com/xgqfrms/p/9770091.html
Dart bug
MongoDB
$ mongo --version
“mongo” cannot be opened because the developer cannot be verified.
macOS cannot verify that this app is free from malware.
Chrome downloaded this file on April 21, 2020 from www.mongodb.com.
macOS 15.x upgrade bug
refs
https://www.zhihu.com/question/350269785/answer/1279944536
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