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root@berault:~$ hdparm -t /dev/hdc
/dev/hdc:
Timing buffered disk reads: 10 MB in 3.13 seconds = 3.19 MB/sec
root@berault:~$ hdparm -d 1 /dev/hdc
/dev/hdc:
setting using_dma to 1 (on)
HDIO_SET_DMA failed: Operation not permitted
using_dma = 0 (off)
root@berault:~$ lspci
...
00:1d.5 PIC: Intel Corporation 6300ESB I/O Advanced Programmable Interrupt Controller (rev 02)
00:1d.7 USB Controller: Intel Corporation 6300ESB USB2 Enhanced Host Controller (rev 02)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 0a)
00:1f.0 ISA bridge: Intel Corporation 6300ESB LPC Interface Controller (rev 02)
00:1f.2 IDE interface: Intel Corporation 6300ESB SATA Storage Controller (rev 02)
00:1f.3 SMBus: Intel Corporation 6300ESB SMBus Controller (rev 02)
...
root@berault:~$ lsmod
Module Size Used by Not tainted
nfs 72408 1
nfsd 68208 8
lockd 48848 1 [nfs nfsd]
sunrpc 66780 1 [nfs nfsd lockd]
parport_pc 25128 1 (autoclean)
lp 7460 0 (unused)
parport 22496 1 [parport_pc lp]
autofs4 8756 2
efs 7436 0 (unused)
af_packet 13544 0 (unused)
i810_audio 25048 0 (unused)
ac97_codec 11884 0 [i810_audio]
soundcore 3428 2 [i810_audio]
e1000 62696 1
hw_random 2700 0 (unused)
serial 52068 0 (unused)
keybdev 1792 0 (unused)
mousedev 3832 0 (unused)
hid 22564 0 (unused)
input 3168 0 [keybdev mousedev hid]
pcmcia_core 39840 0 (unused)
thermal 6692 0 (unused)
processor 9008 0 [thermal]
fan 1600 0 (unused)
button 2700 0 (unused)
battery 5952 0 (unused)
ac 1792 0
rtc 7004 0
sbp2 16588 0 (unused)
ohci1394 22888 0 (unused)
ieee1394 183300 0 [sbp2 ohci1394]
usb-storage 62016 0 (unused)
usb-uhci 21836 0 (unused)
usbcore 57824 1 [hid usb-storage usb-uhci]
ataraid 6404 0 (unused)
ide-scsi 9040 0
ext3 64388 3 (autoclean)
jbd 46804 3 (autoclean) [ext3]
root@berault:~$