What does I/O refer to, when dealing with computers?

I am getting an I/o error in UNIX on one of my computers, and I think it's about time I understood what it was. ;)

What does I/O refer to, when dealing with computers?free anti virus

Input / Output.

In short getting data in and out of the operating system or cpu from disk and memory.

You probably have a bad hard drive.

...

Bad disks can usually still be partially read from. They are made up of many platters and parts. It may be that only a part of the drive is dead. To know for sure use a disk verification tool, it may be able to map around the bad parts is the drive motor itself is still okay.

What does I/O refer to, when dealing with computers?internet security software

Reinstall the OS. You shouldn't be using UNIX, you don't even know what the error message was!
input output