pjc5520 发表于 2003-4-30 23:23:06

怎样知道硬盘和光驱是否工作在DMA模下,是DMA几。

怎样知道硬盘和光驱是否工作在DMA模下,是DMA100还是66或是33。
Redhat9 好像是自动打开dma模式的。我想确定一下。

cnhnln 发表于 2003-4-30 23:43:54

hdparm /dev/hdx
hdparm -i /dev/hdx

红星照耀中国 发表于 2003-5-1 01:19:45

hdparm is, somehow, a powerful tools to control harddisks.
It can even force your hd to go sleeping.
for me, I lost a harddisk 2 years ago. The harddisk went sleeping with the order of hdparm, and didn't wake up anymore. I thought there's something wrong with the power supply of motor.
Anyway, it's a good tool and I will utilize it in the future, except of that trying the sleeping performance.

Bluedata 发表于 2003-5-1 02:02:53

Re: 怎样知道硬盘和光驱是否工作在DMA模下,是DMA几。

怎样知道硬盘和光驱是否工作在DMA模下,是DMA100还是66或是33。
Redhat9 好像是自动打开dma模式的。我想确定一下。
rh9是默认打开了DMA模式的。

红星照耀中国 发表于 2003-5-1 21:27:53

and RH8

pjc5520 发表于 2003-5-1 22:56:48

谢谢各位,我又学到不少知识。
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