Last login: Sat Oct 12 12:23:10 on console
ledavdave@macbookpro ~ % diskutil list
/dev/disk0 (internal, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk0
   1:                        EFI EFI                     314.6 MB   disk0s1
   2:                 Apple_APFS Container disk1         1.0 TB     disk0s2
/dev/disk1 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +1.0 TB     disk1
                                 Physical Store disk0s2
   1:                APFS Volume Macintosh HD - Data     8.2 GB     disk1s1
   2:                APFS Volume Preboot                 2.4 GB     disk1s2
   3:                APFS Volume Recovery                1.3 GB     disk1s3
   4:                APFS Volume Macintosh HD            10.7 GB    disk1s4
   5:              APFS Snapshot com.apple.os.update-... 10.7 GB    disk1s4s1
   6:                APFS Volume VM                      20.5 KB    disk1s6
/dev/disk3 (external, physical):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *5.0 TB     disk3
   1:                        EFI EFI                     209.7 MB   disk3s1
   2:       Microsoft Basic Data LaCie                   5.0 TB     disk3s2
ledavdave@macbookpro ~ % diskutil mount readOnly disk3s2
Volume on disk3s2 failed to mount
If you think the volume is supported but damaged, try the "readOnly" option
ledavdave@macbookpro ~ % diskutil info disk3s2diskutil info disk3s2
Usage:  diskutil info[rmation] [-plist]
        MountPoint|DiskIdentifier|DeviceNode|UUID | -all
Display detailed information about a disk or partition.
Root or administrator access is not required.
ledavdave@macbookpro ~ % diskutil info disk3s2
   Device Identifier:         disk3s2
   Device Node:               /dev/disk3s2
   Whole:                     No
   Part of Whole:             disk3
   Volume Name:               LaCie
   Mounted:                   No
   Partition Type:            Microsoft Basic Data
   File System Personality:   ExFAT
   Type (Bundle):             exfat
   Name (User Visible):       ExFAT
   OS Can Be Installed:       No
   Media Type:                Générique
   Protocol:                  USB
   SMART Status:              Not Supported
   Volume UUID:               57361C12-1D64-3DD2-B0A1-4E0C30DD7B66
   Disk / Partition UUID:     783A942F-14B0-11EE-ACB9-2C4D54D3DCD8
   Partition Offset:          210763776 Bytes (411648 512-Byte-Device-Blocks)
   Disk Size:                 5.0 TB (5000770093056 Bytes) (exactly 9767129088 512-Byte-Units)
   Device Block Size:         512 Bytes
   Volume Total Space:        0 B (0 Bytes) (exactly 0 512-Byte-Units)
   Volume Free Space:         0 B (0 Bytes) (exactly 0 512-Byte-Units)
   Media OS Use Only:         No
   Media Read-Only:           No
   Volume Read-Only:          Not applicable (not mounted)
   Device Location:           External
   Removable Media:           Fixed
   Solid State:               No
ledavdave@macbookpro ~ % diskutil verifyVolume disk3s2
Started file system verification on disk3s2 (LaCie)
Verifying file system
Volume is already unmounted
Performing fsck_exfat -n -x /dev/rdisk3s2
Checking volume
Checking main boot region
Checking system files
Volume name is LaCie
Checking upper case translation table
Volume name is ㎸
Volume name is ᤎ
Volume name is 켞毙쮰姬㎅伥꾐
Volume name is 姖Ṩ粭楸픭⊽䷥
Checking file system hierarchy
Checking active bitmap
Rechecking main boot region
Rechecking alternate boot region
The volume 姖Ṩ粭楸픭⊽䷥ appears to be OK
File system check exit code is 0
Restoring the original state found as unmounted
Finished file system verification on disk3s2 (LaCie)
ledavdave@macbookpro ~ % >....                                                         
   Volume UUID:               57361C12-1D64-3DD2-B0A1-4E0C30DD7B66
   Disk / Partition UUID:     783A942F-14B0-11EE-ACB9-2C4D54D3DCD8
   Partition Offset:          210763776 Bytes (411648 512-Byte-Device-Blocks)
   Disk Size:                 5.0 TB (5000770093056 Bytes) (exactly 9767129088 512-Byte-Units)
   Device Block Size:         512 Bytes
   Volume Total Space:        0 B (0 Bytes) (exactly 0 512-Byte-Units)
   Volume Free Space:         0 B (0 Bytes) (exactly 0 512-Byte-Units)
   Media OS Use Only:         No
   Media Read-Only:           No
   Volume Read-Only:          Not applicable (not mounted)
   Device Location:           External
   Removable Media:           Fixed
   Solid State:               No
ledavdave@macbookpro ~ % diskutil verifyVolume disk3s2
Started file system verification on disk3s2 (LaCie)
Verifying file system
Volume is already unmounted
Performing fsck_exfat -n -x /dev/rdisk3s2
Checking volume
Checking main boot region
Checking system files
Volume name is LaCie
Checking upper case translation table
Volume name is ㎸
Volume name is ᤎ
Volume name is 켞毙쮰姬㎅伥꾐
Volume name is 姖Ṩ粭楸픭⊽䷥
Checking file system hierarchy
Checking active bitmap
Rechecking main boot region
Rechecking alternate boot region
The volume 姖Ṩ粭楸픭⊽䷥ appears to be OK
File system check exit code is 0
Restoring the original state found as unmounted
Finished file system verification on disk3s2 (LaCie)
ledavdave@macbookpro ~ %