How to Lock USB Port on Mac OS X 10.4 or later

Hi all Master Mac, someone can help me, please...

We have Power PC G5 with Mac OS X 10.4 and MacBook Pro Mac OS X 10.5, and here we want lock Usb Disk or HDD External when plug in to our Mac system, How can do it ?

And how can set using Terminal Command, Third party software or something else ?

Thanks before

Can you explain a bit more about what you mean by "lock Usb Disk or HDD External "?

I mean how to lock or disabled the Usb mass storage function on Mac OS, like windows just set on registry using regedit. How can I do it on Mac ?

I have Googling and get this :
1) Open the /System/Library/Extensions folder.
2) Remove IOUSBMassStorageClass.kext and Restart.

but, I want to try another way or using any script or command using Terminal.

Thanks

You mean disable, not lock.

Next question: why do you "want to try another way" when you've discovered the correct answer?

@Mr. Chas_m :
Yeah I mean Disable and Lock too.
I want to try another way, because this step is very simple..

Thanks