If you have more than one Mac you want to upgrade to macOS 10.15 Catalina but don't want to waste so much bandwidth downloading it for each machine, one option is to create a bootable installer on a ...

Apple only sells OS X Mountain Lion as a digital download in the Mac App Store. The installer weighs in at a hefty 4.05GB, but the good news is that you can install your copy of Mountain Lion on all ...

While I understand the utility of a USB installer, it should be mentioned that macOS Internet recovery has been around since Lion. You can choose to install latest ...

Creating a bootable macOS Catalina USB install drive is an effective way to generate a clean installation of macOS on your Mac. This hands-on tutorial will work with both the macOS Catalina developer ...

Making a bootable macOS Big Sur USB drive is a quick and clean way to install a fresh copy of macOS on your Mac. This hands-on tutorial is valid for both the public and developer beta versions of ...

Bootable disc image files may contain all the data necessary to create a disc from which computers can boot, but if you want them to work, you can't just burn them to a disc the way you would regular ...

This article is for people whose Macs came preinstalled with Mavericks. If you can download the Mavericks installer from the Mac App Store, you should instead use our standard instructions for ...