Time Machine: No FAT or exFAT drives, only HFS+ and APFS

While macOS can mount and interact with these drives, Time Machine cannot.

time machine high sierra icon
Apple

Note: When you purchase something after clicking links in our articles, we may earn a small commission. Read our affiliate link policy for more details.

Glenn Fleishman’s most recent books include Take Control of Zoom, Second Edition, Take Control of Your M-Series Mac, and Take Control of Securing Your Mac. In his spare time, he makes Tiny Type Museums. He’s a senior contributor to Macworld, where he writes Mac 911.