Baslinux mailing list

[sindi keesan <keesan AT sdf.lonestar.org>]

On Fri, 3 Feb 2006, David Moberg wrote:

> sindi keesan wrote:
> > > It may make more sense to rebuild busybox with the hdparm applet.
> > > You can skip the DMA feature - BL has DMA off by default and it is
> > > only useful if your hardware supports DMA and you need a faster
> > > disk transfer.
> >
> > Two of our computers seem to have DMA problems and BL (2) tries to do
> > something and finally disables DMA, so I had to disable in CMOS.
> > Someone said it keeps the cpu from overheating.  The cpu in one of these
> > was indeed gettinbg fried.  We had to put on a better heat sink (flat on
> > the bottom to match the cpu, without a heat transfer pad in the middle).
>
> If the CPU burns up because DMA is disabled, it is only a symptom of
> a hardware problem, i.e. poor cooling or CPU clocked too high. DMA
> only increases the speed of data transfers and reduces CPU usage.

We improved the cooling.  The CPU is set to its rated speed of 400MHz.

> > The loop version has it in /DOS/initrd, the ext2 does not have it
> > anywhere.
> >
> > What does it do in initrd?
>
> Do you mean initrd/DOS? That is your DOS partition. I don't have
> hdparm in my initrd or dos partition.

Silly me.  I must have copied it to DOS from BL2, and the glibc version 
works in BL3 with the library upgrade.