출처는 다음과 같습니다 https://xpenology.com/forum/topic/6715-exfat-for-dsm-50-amp-dsm-60/#comment-61360

번거롭긴하지만 정 급하면 이렇게도 되긴 됩니다. 따라해봤는데 쉽게 되네요. 절차를 간단하게 어떻게 해 볼 수도 있을거 같긴한데 능력이 안 돼서 패스...

혹시 더 간단한 방법을 아시는 분은 공유 부탁드립니다~

1. Enabled root user via ssh:

sudo su -
synouser --setpw root your_new_root_password

2. Login as root user via ssh:

ssh root@nas_ip_address

3. Download and install the exfat-fuse package as the following code:

It seems DSM 5.0 is 32bit linux, and DSM 6.0 is 64bit version, please download different packages.

DSM 5.0

wget -P /tmp/ http://mirrors.kernel.org/ubuntu/pool/universe/f/fuse-exfat/exfat-fuse_1.2.3-1_i386.deb
dpkg -x /tmp/exfat-fuse_1.2.3-1_i386.deb /tmp/exfat-fuse/
cp /tmp/exfat-fuse/sbin/mount.exfat-fuse /usr/bin/

DSM 6.0

wget -P /tmp/ http://mirrors.kernel.org/ubuntu/pool/universe/f/fuse-exfat/exfat-fuse_1.2.3-1_amd64.deb
dpkg -x /tmp/exfat-fuse_1.2.3-1_amd64.deb /tmp/exfat-fuse/
cp /tmp/exfat-fuse/sbin/mount.exfat-fuse /usr/bin/

4. Create a Shared Folder in Control Panal, e.g. usbexfat in Volume1

5. Plug the usb device with exFAT format, and in ssh:

fdisk -l

find out the exFAT device like this:

DSM 5.0

Device     Boot Start     End Sectors  Size Id Type
/dev/sdu1         256 7823654 7823399  3.7G  7 HPFS/NTFS

DSM 6.0

Device     Boot Start     End Sectors  Size Id Type
/dev/sdu1         256 7823654 7823399  3.7G  7 HPFS/NTFS/exFAT

6. Mount the exFAT partition:

mount.exfat-fuse /dev/sdu1 /volume1/usbexfat -o nonempty

7. Then can read & write the exFAT partition in Shared Folder usbexfat.

8. Unmount the exFAT partition:

umount /volume1/usbexfat

9. Eject the usb device in Control Panel or ssh:

eject -F /dev/sdu1