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PIO only CF card boot

From: Christopher Brooks
Subject: PIO only CF card boot
Date: Tue, 06 Oct 2009 18:08:10 -0600



I’m booting off of a CF card (Kingston 32gig elite pro).  The card reader I’m using doesn’t support DMA, and won’t boot off of this card.  Grub fails in stage 2 with error 25 (disk read error).  I think (not sure) grub is trying to use dma mode to load menu.lst in stage 2, and the device is timing out.  I would like to build/configure grub such that it doesn’t try and load menu.lst using dma mode, but instead just defaults to pio mode.


Tips on how to accomplish this?  Does it seem like a reasonable explanation for what is happening?





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