diskutil

dimitriss-imac:python3.3m kilon$ diskutil info disk0s2
   Device Identifier:        disk0s2
   Device Node:              /dev/disk0s2
   Part of Whole:            disk0
   Device / Media Name:      Untitled

   Volume Name:              Untitled
   Escaped with Unicode:     Untitled

   Mounted:                  Yes
   Mount Point:              /
   Escaped with Unicode:     /

   File System Personality:  Journaled HFS+
   Type (Bundle):            hfs
   Name (User Visible):      Mac OS Extended (Journaled)
   Journal:                  Journal size 24576 KB at offset 0x747000
   Owners:                   Enabled

   Partition Type:           Apple_HFS
   OS Can Be Installed:      Yes
   Media Type:               Generic
   Protocol:                 SATA
   SMART Status:             Verified
   Volume UUID:              1C9C871C-4605-355F-B48F-E410F94868AD

   Total Size:               249.2 GB (249199591424 Bytes) (exactly 486717952 512-Byte-Blocks)
   Volume Free Space:        200.0 GB (199975448576 Bytes) (exactly 390577048 512-Byte-Blocks)
   Device Block Size:        512 Bytes

   Read-Only Media:          No
   Read-Only Volume:         No
   Ejectable:                No

   Whole:                    No
   Internal:                 Yes
   Solid State:              No