[CentOS] hdparm: Inappropriate ioctl for device

Can someone please explain what's wrong here. And how to solve it.

I run CentOS-4.1 MSI K8N Neo Platinum Athlon 3000 Seagate Barracuda 7200.7 S-ATA disc

[root@amd64 kai]# /sbin/hdparm -tT /dev/sda

/dev/sda: Timing cached reads: 2808 MB in 2.00 seconds = 1402.81 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device Timing buffered disk reads: 166 MB in 3.01 seconds = 55.07 MB/sec HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device [root@amd64 kai]# [root@amd64 kai]# /sbin/hdparm -i /dev/sda

/dev/sda: HDIO_GET_IDENTITY failed: Inappropriate ioctl for device [root@amd64 kai]#