>    The real physical problem for CD-R drives (or even CD drives playing
> games) is that the master blocks the slave. Anytime the system wants to

True, I didn't really discuss why, only what the result was :-)

>    To get around this problem, Intel introduced dual IDE controllers years
> ago in their chipsets. Normal configuration was for one controller to talk

The problem is that many of us have 4 devices on those two channels
:-)

>    I found out a few months ago that Linux takes a default stance of not
> enabling DMA on the IDE controllers. This lowers disk throughput a lot. For

Hmmm...would you know if that's the change that's taken place between
v7.1 and v7.2 of Mandrake (2.2.15 -> 2.2.17 kernel)?  I had no streams
problems with any version of Linux prior to LM7.2 but it's real enough
with it.

>    I am NOT at all familiar with laptop architectures these days, but I have

My problem too.  

Since you've dug into Linux/IDE, maybe you can scratch your head and
figure this one out.

I've got a friend of mine who's got a computer that's almost identical
to mine (K6 2-500, 128meg, two hard drives, CD player, CD writer) and
all works peachy for him with Windows and even an installation of
Linux 7.1.  BUT, when he tries to do a 7.2 install the installer
starts doing its thing, even says that it's succeeded in looking at
hda, hdb, hdc, hdd and then he gets

ide0 is on IRQ14
ide1 is on IRQ15

and the installer freezes.  Any idea what's going on there?

Cheers --- Larry
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