ExFAT

exFAT (Extended File Allocation Table), Article description::a Microsoft file system optimized for flash memory storage such as USB sticks, is available to Gentoo Linux systems through a FUSE module.

Kernel 5.7 and above
Enable exFAT support in the kernel:

FUSE system for earlier kernels
Make sure support for Filesystem in Userspace (FUSE) is enabled in the kernel:

Kernel 5.7 and above
Install the package:

FUSE system for earlier kernels
Install the FUSE exfat package:

For filesystem creation and manipulation beyond that of the command it is necessary to install the  package:

Kernel 5.7 and above
To create an exFAT file system, use :

For instance, to create it on a removable device present at while assigning "Flash" as the file system label:

FUSE system for earlier kernels
To create an exFAT file system, use (or the  command, which is synonymous):

For instance, to create it on a removable device present at while assigning "Flash" as the file system label:

Kernel 5.7 and above
With native support, standard mount commands work perfectly:

FUSE system for earlier kernels
The file system can then be mounted using the command:

For instance, to mount the file system created in the above example:

To unmount, simply use the command:

Integrity checking
To check the integrity of an exFAT filesystem, use :

Compatibility with macOS
To allow ExFAT formatted disks to be read by macOS, the disk must use a GUID partition table, and have the Microsoft basic data flag set.