Bear in mind-when you download an installer, the disk will be reformatted to suit the operating system you’re trying to run. Whichever type of drive you choose, make sure that it has at least 12GB of free memory.
Get a bootable flash drive For your external disk to run macOS, you can choose as a USB flash drive, as well as an SSD or HDD.This will launch Apple’s ‘Startup Manager’ which shows bootable devices connected to the machine. If you want to use your USB stick with an Apple Mac, you will need to restart or power-on the Mac with the USB stick inserted while the Option/alt (⌥) key is pressed.Select “USB Drive” from the drop-down menu in front of “Type” and also select the name of your USB drive. Click on “Disk Image” and then on the “.” icon and select the.iso file that you have downloaded. From “Disk Utility,” click on your USB drive.
With a bootable Ubuntu USB stick, you can:
