Mac Catalina supports plenty of different file formats. Let's get started! The Best File Formats for a Mac External Hard Drive Also, the post will throw light on how to format external hard drives into Mac compatible file systems. This guide is compiled to help Mac Catalina users to find the best external hard drive file formats. If the external drive isn't formatted in Mac-compatible formats, it can create several errors like read-only, unable to mount USB drive properly, and so on. If you have also updated your computer to Mac Catalina operating software and want to connect external hard drives with it, first get to know all the file formats supported by Mac Catalina.Īpple has allowed macOS to work with only certain file formats. And, after the MacOS Catalina introduction, they have become even more rigorous. Macintosh computers have always been fast and powerful. PAGE CONTENT: The Best File Formats for a Mac External Hard Drive How to Format External Hard Drive with Disk Utility Additional Trick: EaseUS NTFS For Mac