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diskutil info disk2s3
Device Identifier: disk2s3
Device Node: /dev/disk2s3
Whole: No
Part of Whole: disk2
Volume Name: WD Elements 1.5
Mounted: No
Partition Type: Apple_HFS
File System Personality: Journaled HFS+
Type (Bundle): hfs
Name (User Visible): Mac OS Extended (Journaled)
Journal: Unknown (not mounted)
Owners: Disabled
diskutil verifyVolume disk2s3
diskutil verifyVolume disk2s3
Started file system verification on disk2s3 WD Elements 1.5
Verifying file system
Volume was successfully unmounted
Performing fsck_hfs -fn -x /dev/rdisk2s3
Checking Journaled HFS Plus volume
Checking extents overflow file
Checking catalog file
Checking multi-linked files
Checking catalog hierarchy
Checking extended attributes file
Checking volume bitmap
[ \ 0%................................................... ] 1.0%
Started file system verification on disk2s3 WD Elements 1.5
Verifying file system
Volume was successfully unmounted
Performing fsck_hfs -fn -x /dev/rdisk2s3
Checking Journaled HFS Plus volume
Checking extents overflow file
Checking catalog file
Checking multi-linked files
Checking catalog hierarchy
Checking extended attributes file
Checking volume bitmap
The volume WD Elements 1.5 could not be verified completely
File system check exit code is 8
Restoring the original state found as mounted
Problem -69842 occurred while restoring the original mount state
Error: -69845: File system verify or repair failed
Underlying error: 8
diskutil repairVolume disk2s3
diskutil repairVolume disk2s3
OS Can Be Installed: No
Media Type: Generic
Protocol: USB
SMART Status: Not Supported
Volume UUID: C9F96C28-EB15-3747-864C-4F979E79DF91
Partition Offset: 134250496 Bytes (262208 512-Byte-Device-Blocks)
Disk Size: 1.5 TB (1500133679104 Bytes) (exactly 2929948592 512-Byte-Units)
Device Block Size: 512 Bytes
Volume Total Space: 1.5 TB (1500133679104 Bytes) (exactly 2929948592 512-Byte-Units)
Volume Used Space: 30.6 GB (30610599936 Bytes) (exactly 59786328 512-Byte-Units) (2.0%)
Volume Free Space: 1.5 TB (1469523079168 Bytes) (exactly 2870162264 512-Byte-Units) (98.0%)
Allocation Block Size: 4096 Bytes
Read-Only Media: No
Read-Only Volume: No (not mounted)
Device Location: External
Removable Media: Fixed
Started file system repair on disk2s3 WD Elements 1.5
Repairing file system
Volume could not be unmounted
Restoring the original state found as mounted
Error: -69673: Unable to unmount volume for repair
The operation might have failed in part because an unmount operation was dissented by PID 110
diskutil list
diskutil eraseDisk jhfs+ Elements gpt disk2