However, if you plan on only using a drive on your Mac and it has MacOS High Sierra or newer installed, you'll want to stick to Apple's APFS format. And if that's how you plan on using your drive, then you're right - exFAT is the way to go. It comes down to which OS are you going to use the drive with?Īccording to the list above, formatting your hard drive to exFAT so that you can read and write on either a PC or Mac seems like the obvious solution. Natively read/write HFS+ on MacOS High Sierra and newer.Required for local Time Machine backupsĪPFS (Hierarchical File System, aka Mac OS Extended).Natively read/write HFS+ on MacOS up to Mac OS X Sierra.HFS+ (Hierarchical File System, aka Mac OS Extended) Full NTFS support on Mac requires paid third-party app.Natively read/write exFAT on Windows and MacOS.But before I can dig into what makes sense when, look over this quick rundown of the different standards and which OS each one is compatible with. If the Security Options button is not available, Disk Utility cannot perform a secure erase on the storage device.The file format standard you use for your external drive will depend on how you plan on using the drive. Secure erase options are available only for some types of storage devices. (Optional) If available, click Security Options, use the slider to choose how many times to write over the erased data, then click OK. If the Scheme pop-up menu isn’t available, make sure you selected the storage device you want to erase-it’s at the top of the hierarchy.Ĭlick the Format pop-up menu, then choose a file system format. Ĭlick the Scheme pop-up menu, then choose GUID Partition Map. In the sidebar, select the storage device you want to erase, then click the Erase button. If you want to erase any other type of storage device: Double-click Disk Utility in the /Applications/Utilities folder. Note: If you want to get your Mac ready to trade in, sell, or give away, and your computer is a Mac with Apple silicon or an Intel-based Mac with an Apple T2 Security Chip, use Erase Assistant.
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