When copying disks in the Zip drive, do NOT use Microsoft DISKCOPY.EXE . This utility only woks correctly with floppy drives.
Certain applications and games will install only to a fixed disk. To install these programs to the Zip drive, use the Iomega "lock" utility to make the Zip drive appear as a hard drive to the system. After the software installation is complete, use "Unlock" to restore disk removability.