If you have multiple bootable partitions on your Mac device like when you create a separate partition for testing a new OS like OS X EI Capitan then you should know how to manage your Mac’s start up disk.
The Startup disk is the disk that the Mac boots from when restarting your personal computer and you can change this disk permanently or change it on a temporary step by step basis. In this article let us discuss how to choose your start up disk on Mac.
How to permanently set your Mac’s start up disk
- Open system preferences and there tap on startup disk.
- Click the disk that you wish to use as your Mac’s permanent startup disk.
Whenever you reboot your computer, your Mac will always boot to the selected disk and you can change this settings at your leisure.
How to change your Mac’s startup disk
- Reboot your Mac while holding the option key on your keyboard to load the start up manager.
- From the start manager, click on the disk that you wish to booth from.
That’s it and its better to use the startup disk option in system preferences if you plan on using a particular disk for an extended period of time, otherwise it may be best just to temporarily switch disks using the Startup manager on reboot.