One additional APFS benefit is for those who may need their drive to interact with Windows machines. Designed with flash media in mind, APFS is the new default drive format and a great option for security and speed-particularly with increasingly popular solid state drives (SSDs). With the 2017 advent of the High Sierra version of Mac OSX, Apple introduced a new file system. There’s a fourth Mac OS Extended formatting option that combines all three of the aforementioned quirks for those who want it all: “Mac OS Extended – Case-sensitive, Journaled and Encrypted.” APFS That means a file named “john_smith_portrait.jpg” and the file “John_Smith_Portrait.jpg” could exist separately side by side. Unlike the standard in the Mac universe, “Mac OS Extended-Case-sensitive” adds another layer of specificity to file and folder names based on capitalization. “Mac OS Extended-Encrypted” uses password-protected encryption to secure the data on individual disk partitions.

For several years, the Mac formatting standard has been “Mac OS Extended-Journaled,” which helps prevent corrupted data in case of power outage, improper ejection or drive failures. There are actually a few subcategories in the Mac OS Extended family, which can be selected when formatting a drive in Mac’s Disk Utility.

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