hdparm -d 1 -A 1 -m 16 -u 1 -a 64 /dev/hdc3

/dev/hdc3:
 setting fs readahead to 64
 setting multcount to 16
 HDIO_SET_MULTCOUNT failed: Invalid argument
 setting unmaskirq to 1 (on)
 HDIO_SET_UNMASKINTR failed: Invalid argument
 setting using_dma to 1 (on)
 HDIO_SET_DMA failed: Invalid argument
 setting drive read-lookahead to 1 (on)
 multcount    =  0 (off)
 unmaskirq    =  0 (off)
 using_dma    =  0 (off)
 readahead    = 64 (on)