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* hdparm and prefix invalidation
@ 2009-11-09  6:33 Pedro A ARANDA
  2009-11-09  8:19 ` Vladimir 'phcoder' Serbinenko
  0 siblings, 1 reply; 2+ messages in thread
From: Pedro A ARANDA @ 2009-11-09  6:33 UTC (permalink / raw)
  To: grub-devel

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> After 'insmod ata', loading of further modules typically fails because 
> the drive in the 'prefix' variable is no longer valid.
> The following works for me:
>
> # Load needed modules first
> insmod hdparm
>
> # Switch to ATA driver and load ATA pass-through support
> # (this invalidates prefix)
> insmod ata_pthru
>  
> # Turn APM off
> hdparm -B 255 (ata0)
>
> -- 
> Regards,
> Christian Franke

Thanks Christian :-) that works now. I now understand that the last module
I have to load is ata_pthru That's great. So currently I can turn off APM
and got rid of the clunking. Next step is to make OSX load.

I'm now using 

insmod hfsplus
set root=(hd0,1)
multiboot /boot

I moved 'insmod hfsplus' *before* 'insmod ata_pthru' and
changed set 'root=(hd0,1)' to 'set root=(ata0,1)'

Problem seems to be that after loading ata_pthru it
has some problems with the prefix and still wants to
/boot in (hd0,1)

I have also tried 

search --file --set=root /boot
multiboot /boot

Thanks for any help
 		 	   		  
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2009-11-09  6:33 hdparm and prefix invalidation Pedro A ARANDA
2009-11-09  8:19 ` Vladimir 'phcoder' Serbinenko

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