[rescue] u2 drive trays

Joshua D. Boyd jdboyd at celestrion.celestrion.net
Tue Aug 19 07:50:39 CDT 2003

On Tue, Aug 19, 2003 at 12:20:43AM +0200, Frank Van Damme wrote:

> This one is really, really hard to weed out. While the ide protocol obviously
> sucks, the bus does not "negotiate till the lowest spec". An udma33 and an
> udma133 disk will each operate at their own speed. They will fight for
> bandwidth however. Also, these speeds don't get used automatically, you have
> to set the right settings (with eg hdparl on linux).

In my case, maybe the settings aren't optimal, but they are set to allow
at least UDMA33.  I'm strongly thinking of disconnecting the CD-ROM and
going with one disk per channel until I can afford a better machine.

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