>  > only access ports?
> Use the interupts in the bios system.
That would not work once you've switched into protected mode. It is necessary 
to write own disk drivers for that purpose. Excellent documentation upon the 
IDE / SCSI / NEC765u interfaces are found in some of the last chapters of 
"The Indispensable PC Hardware Book", ISBN 0-201-40399-4. (Third Edition)
 -- SPEED 2.00 [NR]: -- Lord Nihil -- This is a microsoft-free zone.
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