Apple explained at the WWDC meeting on Wednesday that Apple's apple silicon based MAC will introduce a new system for accessing Mac OS recovery and security options at startup.The existing MAC includes many Mac OS recovery options when it is powered on, which can be accessed through key combination. For example, command-r can start MAC in recovery mode, and command-option-p-r can reset NVRAM. On Apple's Silicon Mac, these key combinations are being replaced by a new boot manager interface.
In the new MAC architecture based on Apple silicon, users can press and hold the power key on the Mac to enter the new startup interface, which has the recovery options of reinstalling Mac OS and the options of normal startup, shutdown and restart.
Apple will also replace the so-called "Mac sharing mode" for transmitting data between two Mac
In addition, users can choose different security modes for the boot volume. The full security mode enabled by default provides the same level of security as Apple's IOS devices, allowing users to boot from external disks without reducing system security.
At the same time, reducing security mode can provide more flexibility, which allows users to disable system integrity protection and run any version of Mac OS, including those no longer signed by apple.
For more details on this and other new launch features, please check the WWDC full minutes on the Apple Developer website:https://developer.apple.com/videos/play/wwdc2020/10686/