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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. Click here to see other formatting options for your operating system.Looking for a different formatting option? When using between macOS and Windows, drives should always be formatted on macOS because not all Windows allocation unit sizes (cluster 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.Starting with Big Sur, APFS is now the default for Time Machine.
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ExFAT is not compatible with Time Machine.
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It is important to keep the following in mind when formatting to ExFAT:
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