OSDev.org

Hi,

how do I select ide drive 3 or 4 using ports? (1f6)
(http://www.nondot.org/sabre/os/files/Disk/HD_PORTS.asm)

I only see select primary,secondary, but I have 4 drives in my computer...

also, does anyone have some information about the ide controller?
(for a harddisk)

On a 4-drive system there are two controllers, primary and secondary. Each IDE controller only handles two drives, master and slave.