Mac OS Extended (Journaled) File System.Why Can't You Share An External Hard Drive From Mac To PC By Default?.Why Does An External Hard Drive That Works For Mac And PC Seem So Hard?.What Can't You Share Between A Mac and A Windows PC?.Format External Hard Drive For Mac And Windows YouTube Video.Ejecting Your External Hard Drive From Your Mac Look At The Options Across The Top Of Your Disk Utility Window Pick Your External Drive From The External Disk Section In The Window Find The External Hard Drive Icon On Your Desktop External Hard Drive Compatible With Mac And PC.