[expert] What is this

[Steve Hagerman]

Hello I was given some code by someone and I was curious what it meant: (
This was sent in response to my asking about hard drive optimization )
hard drive optimization :
hdparm -A1 -d1 -X34 /dev/hda

I was told that hdparm was about adjusting the HD and I know that the
/dev/hda is referring to device hda which is the hard drive but those lines
in between got me totally stumped.
Steve Hagerman
[EMAIL PROTECTED]
http://www.advancedisp.com