Check step 2 to confirm Disk Utility is Showing All Devices. NOTE: If you don’t see Scheme, then make sure that all devices are showing and the non-indented entry is selected.
IMPORTANT: This option is not available or required on macOS 10.11 (El Capitan) or 10.12 (Sierra), proceed to step 3
To open Disk Utility - Open Finder > Applications > Utilities > Disk Utility IMPORTANT: Reformatting the drive will erase all data on the drive, so you should copy any data you want off the drive prior to formatting. When using between macOS and Windows, drives should always be formatted on macOS because not all Windows allocation unit sizes (block sizes) are supported by macOS which will prevent the drive from mounting.ExFAT drives must be safely ejected to prevent corruption because ExFAT is not a journaled file system.Time Machine requires the drive to be formatted Mac OS Extended (Journaled) also known as HFS+ ExFAT is not compatible with Time Machine.It is important to keep the following in mind when formatting to ExFAT: This article applies to the following macOS versions:
