[Tfug] question about idebus= thingy :)

Nicolas Lopez tfug@tfug.org
Thu Jan 16 19:09:02 2003


On Thu, Jan 16, 2003 at 05:33:32PM -0700, Jeremy wrote:
> 	Ok, like most people I find watching my linux boot up sequence to be 
> 	a riviting experience. I noticed mention of and idebus parameter where I 
> could pass to the kernel the speed of my IDE bus (it's just "assumes" 
> 33, mine's 133). Is setting this a good idea? I can't find much on 
  Uh, no it isn't.  That parameter is for the speed of the bus the ide
controler is on, ie, PCI/VESA.  Unless you have some server, or high end
workstation hardware that's 33Mhz, or maybe as low as 25Mhz.  IIRC that
number is used for setting some timing registers on some controlers.

  Anyway, Goldarg distracted me with offensive material so I forgot where I
was going with this.

  Oh, the idebus parameter is ranged from 20 to 66. See the comments about
it in drivers/ide/ide.c in your nearest kernel tree.

> idebus=66 can I expect to get lots of errors on my harddrive? Heck, is 
  Probably, or just a complaint from the kernel when it gets to that part. 
It's only for PIO modes anyway, so it shouldn't actually effect you.

> it even worth the trouble/will make a difference?

  - Nick Lopez
    kimo_sabe@atdot.org
--
< sourdough> paulus is hardcore
< sourdough> he boots his kernel by manually twiddling bits on the CPU with
a electronics probe