[CentOS] help with hdparm
JohnS
jses27 at gmail.com
Mon Dec 22 21:29:37 UTC 2008
On Mon, 2008-12-22 at 15:27 -0500, Jerry Geis wrote:
> I am running centos 5.2 i686.
>
> The /boot/config indicates that VIA82CXXXX is built into the kernel.
> CONFIG_BLK_DEV_VIA82CXXX=y
>
> my lspci -v gives
> 00:0f.0 IDE interface: VIA Technologies, Inc. CX700M2 IDE (prog-if 8a
> [Master SecP PriP])
> Subsystem: VIA Technologies, Inc. Unknown device 0581
> Flags: bus master, medium devsel, latency 32
> I/O ports at fc00 [size=16]
> Capabilities: [b0] Power Management version 2
>
> Which I think is the VIA part.
>
> when I do "hdparm /dev/hdc" I get
> /dev/hdc:
> multcount = 0 (off)
> IO_support = 0 (default 16-bit)
> unmaskirq = 0 (off)
> using_dma = 0 (off)
> keepsettings = 0 (off)
> readonly = 0 (off)
> readahead = 256 (on)
> geometry = 15733/16/63, sectors = 15858864, start = 0
>
> when I do "hdparm -d1 /dev/dhc" I get
>
> /dev/hdc:
> setting using_dma to 1 (on)
> HDIO_SET_DMA failed: Operation not permitted
> using_dma = 0 (off)
>
>
> I get operation not permitted.
> How do I enable DMA mode for this device?
----\
You try setting hdparm -p4 /dev/hda Just to see if you can set the PIO
Mode? How old is the Disk in question?
JohnStanley
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