Hi Juan,
/dev/hdc: multcount = 16 (on) IO_support = 0 (default 16-bit) unmaskirq = 0 (off) using_dma = 0 (off) keepsettings = 0 (off) readonly = 0 (off) readahead = 256 (on) geometry = 16383/255/63, sectors = 234441648, start = 0
I was reading on an unrelated topic, found the link below, and thought that it might be helpful: http://www.mythtv.org/docs/mythtv-HOWTO-20.html#Setting_DMA
Be careful, though. If DMA was disabled because of some conflict, and you force it back on, you could end up with a corrupted filesystem.
--Stewart
