here is what I get. I have three volumes, the internal drive, an external 5tb and an external 1tb. The 1tb is the one that keeps getting appended from OneBT to OneBT 1
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% diskutil list
/dev/disk0 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk0
1: Apple_APFS_ISC Container disk1 524.3 MB disk0s1
2: Apple_APFS Container disk3 994.7 GB disk0s2
3: Apple_APFS_Recovery Container disk2 5.4 GB disk0s3
/dev/disk3 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +994.7 GB disk3
Physical Store disk0s2
1: APFS Volume Macintosh HD 9.1 GB disk3s1
2: APFS Snapshot com.apple.os.update-... 9.1 GB disk3s1s1
3: APFS Volume Preboot 9.2 GB disk3s2
4: APFS Volume Recovery 782.8 MB disk3s3
5: APFS Volume Data 243.3 GB disk3s5
6: APFS Volume VM 20.5 KB disk3s6
/dev/disk4 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk4
1: Apple_APFS Container disk5 1.0 TB disk4s1
/dev/disk5 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +1.0 TB disk5
Physical Store disk4s1
1: APFS Volume OneBT 709.8 GB disk5s1
/dev/disk6 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *5.0 TB disk6
1: EFI EFI 209.7 MB disk6s1
2: Apple_APFS Container disk7 5.0 TB disk6s2
/dev/disk7 (synthesized):
#: TYPE NAME SIZE IDENTIFIER
0: APFS Container Scheme - +5.0 TB disk7
Physical Store disk6s2
1: APFS Volume FiveTB 4.7 TB disk7s1