....let's start at square one with the results of running
in Terminal.
And the winning number is:
Last login: Mon May 13 01:51:23 on console
iMac:~ myname$ diskutil list
/dev/disk0 (internal):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme 28.0 GB disk0
1: EFI EFI 314.6 MB disk0s1
2: Apple_CoreStorage Macintosh HD 27.6 GB disk0s2
3: Apple_Boot Boot OS X 134.2 MB disk0s3
/dev/disk1 (internal, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *1.0 TB disk1
1: EFI EFI 209.7 MB disk1s1
2: Apple_CoreStorage Macintosh HD 999.3 GB disk1s2
3: Apple_Boot Recovery HD 650.0 MB disk1s3
/dev/disk2 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +1.0 TB disk2
Logical Volume on disk0s2, disk1s2
E101F0BD-BB8D-4EBD-9B01-37434753D47C
Unencrypted Fusion Drive
/dev/disk3 (external, physical):
#: TYPE NAME SIZE IDENTIFIER
0: GUID_partition_scheme *320.1 GB disk3
1: EFI EFI 209.7 MB disk3s1
2: Apple_HFS Time Machine 319.7 GB disk3s2
iMac:~ myname$
