Option key at boot lets you specify boot device (DVD or external drive or secondary drive), but otherwise - if you're already in macOS on the old drive, goto System Preferences and select Startup Disk. You get to pick and choose whenever you want!
一旦他们有信誉积分了, 你就可以看到他们一段时间内累积的信誉积分曲线图。
曲线图预览：
还没有获得任何的信誉积分。
Option key at boot lets you specify boot device (DVD or external drive or secondary drive), but otherwise - if you're already in macOS on the old drive, goto System Preferences and select Startup Disk. You get to pick and choose whenever you want!