DMA disable for sandisk CF cards ?

Warner Losh imp at bsdimp.com
Thu Jul 21 08:05:41 GMT 2005


> I cannot find this searching the web, or searching the
> sandisk website.
> 
> Can someone point me in the right direction ?

Add 'hw.ata.ata_dma=0' to your /boot/loader.conf script.  This will
prevent FreeBSD from doing DMA to them.  If the BIOS has issues, you
have to fix it there.

*OR*

You have to get a CF <-> IDE adapter that has the two new wires on it
or retrofit the old one(s) that you have.

Warner


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