OS X Mavericks is available in the Mac App Store now, but it's only an upgrade—but if you want to do a clean install, you'll need to manually burn an installation flash drive. Here's how to do ...

A bootable USB drive is a convenient disk for installing an operating system. Some modern computers don't have a CD/DVD drive for installing or upgrading an operating system.

Jesus Vigo reviews the process to create a mutliboot USB drive used to install multiple versions of OS X.

Has anyone tried dragging the “Install OS X Mavericks” App from the bootable USB Flash Drive w/ Recovery Partition, as outlined by TyWebb, back to the Mac’s Applications folder?

If you want the ability to perform a fresh and clean install of macOS High Sierra, then you should consider creating a bootable macOS High Sierra USB install drive.

We’ve already covered how to do this from the command line (See How to create a bootable USB to install OS X), but I wanted to give those with a fear of the command line a way to do the same thing.

Finally, you will need a DVD-Rom or a USB stick (at least 4 GB). How to do it via the Media Creation Tool? The process of upgrading your system or creating a Windows 10 installation DVD/USB has been ...

If you want the ability to perform a fresh and clean install of macOS Sierra, then you should consider creating a macOS Sierra USB install disk. Not only will this walkthrough work for the macOS ...

The OS X 10.10 Yosemite installer from the Mac App Store in your Applications folder. The installer will delete itself when you install the operating system, but it can be re-downloaded if necessary.