Macs can last a long time. It’s not uncommon to have a Mac that is ten years old, or even older. While you can’t always update old Macs to the latest version of macOS, there are workarounds that let you run the current version of the operating system on unsupported Macs.
If you have an old Mac, it may or may not be worth selling it, but there are lots of things you can do with an old Mac. One of the most useful options is to repurpose it as a server. You can use it to store files and to back up other Macs in your home or office. Here’s how to set up an old (or new) Mac as a server.
Read the rest of the article on The Mac Security Blog.