macOS 10.15经过亲自测试，确认可以正常使用

macos 10.15 Visit macOS Developer Beta page Download macOSDeveloperBetaAccessUtility.dmg using the button above Find the downloaded file and open it. It will open another Finder window Double click on the macOSDeveloperBetaAccessUtility.pkg file on new Finder window Click Continue Click Continue again Click Agree when prompted Click Install Enter your user account's password and click Install Software At this stage you may see the window The Installation was Successful