设置硬盘DMA模式出错？

duron158

如图。

怎么会提示无效参数？如何查看参数列表？

小问题一个，不介意吧。。。

duron158

我在VM里装的。难道是真实的HD在VM里虚拟成SCSI HD的问题？

miFor

hdparm  provides  a  command line interface to various hard disk ioctls supported by the stock Linux ATA/IDE  device  driver  subsystem.

genlinux

if you configure the SATA/SCSI driver in the right way, your driver should be a lot faster than IDE Interface. Since you are using SATA/SCSI drivers, you don't need to configure the DMA for those drivers, because they are turned on in default.
Ref:
http://www.linuxsir.cn/bbs/showthread.php?t=262472