It's simply called the Apple File System (APFS), and it's the first format to be used across both Macs and iOS devices. Starting with macOS "High Sierra," Cupertino ditched its venerable Mac OS Extended file system, commonly abbreviated as HFS+, and switched to an entirely new file system. Before we get to Thunderbolt, we need to address a basic building block of hard drives that has always affected compatibility, and probably always will: the file system.Īn external drive's file system is the most important factor that determines whether or not it's readable by Macs, PCs, or both. We'll start with a breakdown of our favorite external drives for Macs, followed by a guide to how to shop for the best one for you. Read on as we solve this and all of your other Mac external-storage quandaries. In fact, in many cases it makes sense to choose an inexpensive non-Thunderbolt drive that isn't targeted toward Mac use. So what's a Mac user to do who just wants to back up his or her files using Time Machine, or stash a large video collection? Spoiler: A Thunderbolt drive isn't your only option far from it. As a result, they are typically external SSDs, or even multidrive RAID arrays, which means they also tend to be expensive.
The main difference is that many drives made specifically for Macs use the upgraded Thunderbolt data transfer protocol, which promises super-fast data transfers for photographers and video editors who need to store mountains of footage and access it very quickly.
Most laptops with either operating system now come with at least one oval-shaped USB-C port, and it's the one you'll want to use for connecting your external drive. Buying an external hard drive or SSD for your Mac is not all that different from buying one for your Windows PC.
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