串口硬盘的提示是说什么有问题？怎么解决？

tonei

[root@ecofe2 ~]# hdparm /dev/sda

/dev/sda:
HDIO_GET_MULTCOUNT failed: Inappropriate ioctl for device
IO_support   =  0 (default 16-bit)
readonly     =  0 (off)
readahead    = 256 (on)
geometry     = 30515/255/63, sectors = 251000193024, start = 0

tonei

[root@ecofe2 ~]# hdparm -t /dev/sda

/dev/sda:
Timing buffered disk reads:   10 MB in  3.27 seconds =   3.06 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device
这是在用的时候，没用的时候测速有60MB/sec

tonei

[root@ecofe2 ~]# hdparm -t /dev/sda

/dev/sda:
Timing buffered disk reads:   10 MB in  3.27 seconds =   3.06 MB/sec
HDIO_DRIVE_CMD(null) (wait for flush complete) failed: Inappropriate ioctl for device
这是在用的时候，没用的时候测速有60MB/sec