If you want to find additional information on your hard disks in linux you can use an utility called: hdparm.

If you can’t find this utility install it using apt-get on debian: apt-get install hdparm

then at the console type: hdparm -I /dev/sda an it should list something like this:

/dev/sda:

ATA device, with non-removable media
Model Number:       ST31000340NS
Serial Number:      9QJ365N0
Firmware Revision:  SN05
Transport:          Serial
Standards:
Used: unknown (minor revision code 0×0029)
Supported: 8 7 6 5
Likely used: 8
Configuration:
Logical         max     current
cylinders       16383   16383
heads           16      16
sectors/track   63      63
–
CHS current addressable sectors:   16514064
LBA    user addressable sectors:  268435455
LBA48  user addressable sectors: 1953525168
device size with M = 1024*1024:      953869 MBytes
device size with M = 1000*1000:     1000204 MBytes (1000 GB)
Capabilities:
LBA, IORDY(can be disabled)
Queue depth: 32
Standby timer values: spec’d by Standard, no device specific minimum
R/W multiple sector transfer: Max = 16  Current = 16
Recommended acoustic management value: 254, current value: 0
DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 udma5 *udma6
Cycle time: min=120ns recommended=120ns
PIO: pio0 pio1 pio2 pio3 pio4
Cycle time: no flow control=120ns  IORDY flow control=120ns
Commands/features:
Enabled Supported:
*    SMART feature set
Security Mode feature set
*    Power Management feature set
*    Write cache
*    Look-ahead
*    Host Protected Area feature set
*    WRITE_BUFFER command
*    READ_BUFFER command
*    DOWNLOAD_MICROCODE
SET_MAX security extension
*    48-bit Address feature set
*    Device Configuration Overlay feature set
*    Mandatory FLUSH_CACHE
*    FLUSH_CACHE_EXT
*    SMART error logging
*    SMART self-test
*    General Purpose Logging feature set
*    64-bit World wide name
*    Write-Read-Verify feature set
*    WRITE_UNCORRECTABLE_EXT command
*    {READ,WRITE}_DMA_EXT_GPL commands
*    Segmented DOWNLOAD_MICROCODE
*    SATA-I signaling speed (1.5Gb/s)
*    Native Command Queueing (NCQ)
*    Phy event counters
*    Software settings preservation
*    SMART Command Transport (SCT) feature set
*    SCT LBA Segment Access (AC2)
*    SCT Error Recovery Control (AC3)
*    SCT Features Control (AC4)
*    SCT Data Tables (AC5)
Security:
Master password revision code = 65534
supported
not     enabled
not     locked
not     frozen
not     expired: security count
supported: enhanced erase
196min for SECURITY ERASE UNIT. 196min for ENHANCED SECURITY ERASE UNIT.
Logical Unit WWN Device Identifier: 5000c50010f8c3d0
NAA             : 5
IEEE OUI        : c50
Unique ID       : 010f8c3d0
Checksum: correct