I am surprised that exFAT is not supported out of the box as it is a default filesystem used on SDXC cards. You need to install a FUSE-based implementation to access data on devices using it.
This is a clear indication that you need to install a FUSE-based exFAT filesystem implementation.
$ sudo mount /dev/sdb1 /mnt/storage/ mount: unknown filesystem type 'exfat'
You can identify filesystem before trying to mount it, so you can prevent the above-mentioned error.
$ sudo blkid -o list /dev/sdb1 device fs_type label mount point UUID -------------------------------------------------------------------------------------------------- /dev/sdb1 exfat (not mounted) 0200-C860
Install a FUSE-based exFAT filesystem implementation (exfat-fuse
package) and additional utilities (exfat-utils
package).
$ sudo apt-get install exfat-fuse exfat-utils Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed: exfat-fuse exfat-utils 0 upgraded, 2 newly installed, 0 to remove and 0 not upgraded. Need to get 73.0 kB of archives. After this operation, 295 kB of additional disk space will be used. Get:1 http://ftp.task.gda.pl/debian stretch/main amd64 exfat-fuse amd64 1.2.5-2 [28.9 kB] Get:2 http://ftp.task.gda.pl/debian stretch/main amd64 exfat-utils amd64 1.2.5-2 [44.1 kB] Fetched 73.0 kB in 0s (135 kB/s) Selecting previously unselected package exfat-fuse. (Reading database ... 48427 files and directories currently installed.) Preparing to unpack .../exfat-fuse_1.2.5-2_amd64.deb ... Unpacking exfat-fuse (1.2.5-2) ... Selecting previously unselected package exfat-utils. Preparing to unpack .../exfat-utils_1.2.5-2_amd64.deb ... Unpacking exfat-utils (1.2.5-2) ... Setting up exfat-utils (1.2.5-2) ... Setting up exfat-fuse (1.2.5-2) ... Processing triggers for man-db (2.7.6.1-2) ...
Mount exFAT filesystem.
$ sudo mount /dev/sdb1 /mnt/storage/ FUSE exfat 1.2.5
$ df -h /mnt/storage/ Filesystem Size Used Avail Use% Mounted on /dev/sdb1 4.0G 736K 4.0G 1% /mnt/storage
Problem solved.
Additional utilities
These are additional utilities provided by the exfat-utils
package.
Define or display exFAT filesystem label.
$ sudo exfatlabel /dev/sdb1 "backup"
$ sudo exfatlabel /dev/sdb1 backup
Display details about exFAT filesystem.
$ sudo dumpexfat /dev/sdb1 Volume label backup Volume serial number 0x0200c860 FS version 1.0 Sector size 512 Cluster size 32768 Sectors count 8386560 Free sectors 8385088 Clusters count 131022 Free clusters 131017 First sector 0 FAT first sector 128 FAT sectors count 1024 First cluster sector 1152 Root directory cluster 4 Volume state 0x0000 FATs count 1 Drive number 0x80 Allocated space 0%
Check exFAT filesystem.
$ sudo exfatfsck /dev/sdb1 exfatfsck 1.2.5 Checking file system on /dev/sdb1. File system version 1.0 Sector size 512 bytes Cluster size 32 KB Volume size 4095 MB Used space 736 KB Available space 4094 MB Totally 0 directories and 1 files. File system checking finished. No errors found.
Format exFAT filesystem.
$ sudo mkfs.exfat /dev/sdb1 mkexfatfs 1.2.5 Creating... done. Flushing... done. File system created successfully.