iMac-de-Badtine:~ badtinemonty$ diskutil coreStorage resizeStack E274AB91-D0C6-4BE0-8315-B979D7A375A8 0b ; diskutil list
The Core Storage Logical Volume UUID is E274AB91-D0C6-4BE0-8315-B979D7A375A8
Started CoreStorage operation
Checking prerequisites for resizing Logical-Physical volume stack
Error: -69742: The requested size change for the target disk or a related disk is too small; please try a different disk or partition, or make a larger change
/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 749.4 GB disk1s2
3: Apple_Boot Recovery HD 250.6 GB disk1s3
/dev/disk2 (internal, virtual):
#: TYPE NAME SIZE IDENTIFIER
0: Apple_HFS Macintosh HD +776.0 GB disk2
Logical Volume on disk0s2, disk1s2
E274AB91-D0C6-4BE0-8315-B979D7A375A8
Unencrypted Fusion Drive
iMac-de-Badtine:~ badtinemonty$