Getting Information about the Hard drive and list all PCI devices.
$ hdparm /dev/hda
/dev/hda:
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
or for SCSI
$ hdparm /dev/sda
Try it with the -i option for information
$ hdparm -i /dev/hda
/dev/hda:
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: ATA/ATAPI-6 T13 1410D revision 3a:
2 3 4 5 6
How fast is your drive?
$ hdparm -tT /dev/hda
/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
or
$ cat /proc/partitions
or
$ dmesg | egrep '^(s|h)d'
which for my system lists:
hda: IC35L120AVV207-1, ATA DISK drive
hdc: Lite-On LTN486S 48x Max, ATAPI CD/DVD-ROM drive
hda: max request size: 1024KiB
hda: 234375000 sectors (120000 MB) w/7965KiB
Cache, CHS=16383/255/63, UDMA(100)
By the way, if you want to turn on dma
$ hdparm -d1 /dev/hda
setting using_dma to 1 (on)
using_dma = 1 (on)
