ExFAT is faster than NTFS by up to several percent
hard drive write speed.
ExFAT allows a hard drive to easily be
read on Linux, Mac, Android,
Windows Subsystem for Linux can
Formatting a disk deletes all data on the drive.
The system hard drive
C:\ for Windows OS MUST be NTFS.
NOTE: If the hard drive is unformatted, it will not have a drive letter. If you are SURE the drive is empty or want to erase the contents to make it ExFAT, do this through Disk Management.
Format a drive to ExFAT from Windows Explorer by right-click on drive to format and select “format” → File System: “ExFAT”
Alternatively, format a drive to ExFAT from Command Prompt or PowerShell by:
format driveletter /FS:exFAT /Q
Format a drive to ExFAT from Disk Management by running
diskmgmt.msc and right click the new drive → Format.
If NTFS is the only option, use Windows Explorer to format to ExFAT after first formatting to NTFS here.