/dev/disk0 (internal, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *250.1 GB disk0 1: EFI EFI 209.7 MB disk0s1 2: Apple_CoreStorage Mandalay 249.1 GB disk0s2 3: Apple_Boot Recovery HD 784.2 MB disk0s3 /dev/disk1 (internal, virtual): #: TYPE NAME SIZE IDENTIFIER 0: Apple_HFS Mandalay +248.7 GB disk1 Logical Volume on disk0s2 29FD3259-9FEF-4920-AB02-C436567391B7 Unlocked Encrypted /dev/disk2 (external, physical): #: TYPE NAME SIZE IDENTIFIER 0: GUID_partition_scheme *1.0 TB disk2 1: EFI EFI 209.7 MB disk2s1 2: Apple_HFS Backup 999.9 GB disk2s2 3: Apple_Boot Boot OS X 134.2 MB disk2s3