[KLUG Members] disable Hard Drive DMA?

Chris Hansen members@kalamazoolinux.org
Fri, 12 Oct 2001 13:42:51 -0400


>What does /sbin/hdparm /dev/hda report?
>You can turn off DMA with /sbin/hdparm -d0 /dev/hda

hdparm reports:
multcount off
I/O support 16 bit
unmaskirq off
using_dma off
keepsettings off
nowerr off
readonly off
readahead = 8 (on)

DMA is already off by the time it's finished booting (it times out and
gives up)  I'm trying to figure out what is being called that causes the
timeout errors (if not hdparm) and where it is called from in the
scripts.

>You also may be able to disable DMA in the BIOS as well.
I tried, no option

>However, on anything but a fossil of a box DMA should work normally.
Well, it's p133 laptop, so I'm not expecting the world of it.