![how to select boot drive mac how to select boot drive mac](https://iboysoft.com/images/resource/select-startup-disk-with-macos-catalina-installer.jpg)
Click on it and resize the Mac HD to however many GB (gigabytes) you may need to run your multiple OS’s ( Windows OS and Ubuntu). Now the “dragging” corner to partition your hard drive is available.
![how to select boot drive mac how to select boot drive mac](https://images.tenorshare.com/topics/mac-os/create-bootable-macos.jpg)
You might notice that your hard disk name changes. Turn off any disk encryption if enabled, which is at the file setting on the top bar.
#HOW TO SELECT BOOT DRIVE MAC HOW TO#
How to Triple-Boot a Mac (with OS X 10.10 Yosemite, Windows 10 and Ubuntu 14.04 LTS)ġ. Incorrectly performing the following steps may result in damage to your computer. Warning: the following steps are for intermediate to advanced computer users. For these individuals installing multiple operating systems on a Mac is a convenient feature. Some individuals might need run company-specific software that requires Windows or a Linux operating system but might prefer Mac’s OS X operating system for personal use and don’t want to use multiple computers or be stuck using an operating system they are not familiar with. Some programs are only OS X compatible and vice versa. Some older PC games can only run on Windows. There are some programs, apps and games that are system specific. You might be asking yourself why would someone want to be able to run three operating systems on one device. Wouldn’t it be nice if you could have all three major operating systems (OS X, Windows, Ubuntu Linux) running on your computer! This is totally possible with a Mac.