以下为解决方案。
翻阅了opencore的资料,终于找到了解决方案。
在config.plist文件中的UEFI处有个选项ConnectDrivers,官方解释是:
This option is useful for loading drivers following UEFI driver model as they may not start by themselves.
Examples of such drivers are fifilesystem or audio drivers. While effffective, this option may not be necessary for
drivers performing automatic connection, and may slightly slowdown the boot.
换句话说:这个选项如果启用,则是强制加载所有启用的驱动,但是会导致加载OC的速度会变慢,所以问题就出在这里了。
但是不启用的话,按官方文档的说法,有些不是自动连接的驱动将不会载入。