[ale] boot parms ide=???

[Geoffrey]

Cory T. Echols wrote:
> Just a note: I could be completely misunderstanding what your asking
> for.
> 
> On 02/18, Geoffrey wrote:
> 
>>I've been trying to research the various boot parameters available. 
>>Particularily regarding ide parms.  I find references to a doc 
>>README.ide in the kernel source, but I've got two sets of source, 
>>neither has the file.  I finally tracked one down, but no reference to 
>>the ide parms I'm looking for.
> 
> 
> I have /usr/src/linux/Documentation/ide.txt.  Looking at its contents,
> it is probably what you want.

It does in fact have the info I'm looking for.

> 
> 
>>In particular, I had a box that had an ata66 controller and passing 
>>ide=66 was recognized.
>>
>>Following that process I have another box with an ata100 controller, but 
>>when attempting ide=100, I receive an error that this is invalid.  Valid 
>>values are 20-66.
> 
> 
> If you are referring to the "idebus" parameter, (I couldn't find a
> plain "ide" parameter), then it does not refer to the controller speed.
> This is from the document I mentioned:
> 
> "idebus=xx"            : inform IDE driver of VESA/PCI bus speed in MHz,
>                                 where "xx" is between 20 and 66 inclusive,
>                                 used when tuning chipset PIO modes.
>                                 For PCI bus, 25 is correct for a P75 system,
>                                 30 is correct for P90,P120,P180 systems,
>                                 and 33 is used for P100,P133,P166 systems.
>                                 If in doubt, use idebus=33 for PCI.
>                                 As for VLB, it is safest to not specify it.
>                                 Bigger values are safer than smaller ones.
> 
> I've read several post on newsgroups that strongly suggest leaving this
> alone.

Interesting, I've not seen this.  I guess the kernel has not kept up 
with the latest technology, since the highest available value is 66, as 
noted above.

Thanks.

> 
> Not exactly authoritative, but I hope it's helpful.

Really just what I was looking for. :)

-- 
Until later: Geoffrey		esoteric at 3times25.net

The latest, most widespread virus?  Microsoft end user agreement.
Think about it...

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