h36sa@gameinwatch /home/store $ sudo hdparm -X udma4 /dev/sda

/dev/sda:
 setting xfermode to 68 (UltraDMA mode4)
SG_IO: bad/missing ATA_16 sense data::  70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 HDIO_DRIVE_CMD(setxfermode) failed: Input/output error
h36sa@gameinwatch /home/store $ sudo hdparm -X udma3 /dev/sda

/dev/sda:
 setting xfermode to 67 (UltraDMA mode3)
SG_IO: bad/missing ATA_16 sense data::  70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 HDIO_DRIVE_CMD(setxfermode) failed: Input/output error
h36sa@gameinwatch /home/store $ sudo hdparm -X udma2 /dev/sda

/dev/sda:
 setting xfermode to 66 (UltraDMA mode2)
SG_IO: bad/missing ATA_16 sense data::  70 00 05 00 00 00 00 0a 00 00 00 00 24 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 HDIO_DRIVE_CMD(setxfermode) failed: Input/output error