[CentOS] hdparm: Inappropriate ioctl for device

[Kai]

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 at 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 at amd64 kai]#
[root at amd64 kai]# /sbin/hdparm -i /dev/sda

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