Click the Scheme drop-down menu and select GUID Partition Map.

Try to choose the one you can easily recognize.

Click the Erase button on top of the right pane to bring up the Erase USB dialog.

Tip: Click on the heading to see the drop-down list of all active external devices.

Select your USB drive in the left panel under the heading External.

In the Disk Utility toolbar, click the View button and select Show All Devices.

Tip: Open Spotlight search and type in Disk Utility”.

Go to Applications -> Utilities -> Disk Utility.It’s important to mention that the formatting process depends on your drive storage capacity and on the amount of data stored on it! Here are all the steps you need to follow How to prepare a USB Drive for encrypting in macOS Mojave.

Our task is to get rid of both and reformat a drive.īecause data will be erased during the formatting, a very critical step is to pick up a used USB drive and copy the data on the USB drive to a safe location, like your Mac’s internal disk, iCloud, or any other cloud files storage. Unfortunately, all USB drives from the shelf usually have Windows compatible FAT32 or NTFS systems and some bloatware from the maker. Therefore, the encryption works with drives that feature GUID Partition Map only. Starting with macOS High Sierra (10.13), Apple switched to the new HFS+ or Apple File System. (Please note that this method only works with Mac Windows desktops use third-party decrypting apps.) Preparing a USB Drive

You can encrypt and afterwards decrypt any USB flash drive or USB-connected hard drive if you’re on the go and want to be sure your data is safe and secure on its way to another Mac. Finder inherits XTS-AES encryption from FileVault 2, which bans no-password access to data on a Mac’s startup disk. One of the great macOS Mojave highlights is an encrypt-on-the-fly option, which is built into Finder.

How to encrypt a flash drive mac