Sharing Knowledge | System Admin Articles

Getting Information about Hard disk : Linux HOWTO

Getting Information about the Hard drive in Linux:

# hdparm /dev/sda

multcount    = 16 (on)
IO_support   =  0 (default 16-bit)
unmaskirq    =  0 (off)
using_dma    =  1 (on)
keepsettings =  0 (off)
readonly     =  0 (off)
readahead    = 256 (on)
geometry     = 16383/255/63, sectors = 234375000, start = 0

Add the -i option for more information:

# hdparm -i /dev/sda


Model=IC35L120AVV207-1, FwRev=V24OA66A, SerialNo=VNVD09G4CZ6E0T
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=52
BuffType=DualPortCache, BuffSize=7965kB, MaxMultSect=16, MultSect=16
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=234375000
IORDY=on/off, tPIO={min:240,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio1 pio2 pio3 pio4
DMA modes:  mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5
AdvancedPM=yes: disabled (255) WriteCache=enabled
Drive conforms to: SATA T13 1410D revision 3a:  2 3 4 5 6

How fast is your drive? 

# hdparm -tT /dev/hda

Timing buffer-cache reads:   128 MB in  0.41 seconds =315.32 MB/sec
Timing buffered disk reads:  64 MB in  1.19 seconds = 53.65 MB/sec 

Need to find your device? 

# mount
# cat /proc/partitions
# dmesg | egrep '^sd'

sda: IC35L120AVV207-1, SATA DISK drive
sdc: Lite-On LTN486S 48x Max, ATAPI CD/DVD-ROM drive
sda: max request size: 1024KiB
sda: 234375000 sectors (120000 MB) w/7965KiB Cache, CHS=16383/255/63, UDMA(100)

Finally, if you want to turn on DMA: 

# hdparm -d1 /dev/sda

setting using_dma to 1 (on)
using_dma    =  1 (on)

Labels: Linux

My Profile PhotoAbout the Author

I'm Parthiban, An UNIX System Admin by Profession. I'm Experienced in Linux/Unix System Administration and Scripting. I have done lot of work on the infrastructure Mgmt side in Linux, UNIX and Windows system administration, Hardware, Storage and Data center. I'm blogging since 2008.
Follow Me On Twitter or On Facebook

0 Comments for "Getting Information about Hard disk : Linux HOWTO"

What do you think about this Article? Add your Opinion..!

Back To Top