two computers on one hard drive

[cesarccarro]

I have an external hard drive that I have some programs on. It has two firewire ports and needs to stay plugged into the one computer at all times. When I plug another computer into the second port to share files, it only appears on one computer at a time. How do I change that so that it appears on both? thanx.

 

[JohnWill]

You don't. If you want an external drive that is visible to more than one computer, try something like an inexpensive NAS (Network Attached Storage) solution. A typical one is the Iomega NAS 100d, but there are many others.