Installing Xcode, Simulators and Other Tools to External Storage
From : https://stackoverflow.com/questions/59159232/can-i-install-xcode-on-an-external-hard-drive-along-with-the-iphone-simulator-ap As mentioned in the comments, if you already have Xcode installed the process is quite simple. Start by copying Xcode from the Internal HD to an External drive, rename the original and run the commands from step 4 & 5, and this should do the trick. If so, delete the original (now renamed) directory / app bundle. My experience is that if you don't have Xcode already, the process is a bit more involved. There may be simpler ways to do this, but after getting different errors for every thing I've tried, I've done it this way on a MacBook Pro 16" running macOS Catalina (10.15.2) and Xcode 11.3 : I have my external drive attached to the MacBook at all times, using a bit of Velcro as the Samsung T5 drive I use is so small and light. It's mounted at: /Volumes/SSD On the external drive I've copied Xcode into: /Volumes/SSD/Applicatio...