Abstract: A method for deploying a computer operating environment and a deployment system are provided. A template machine is provided. A deployment program is executed in the template machine for scanning data of an operating system and applications in the template machine. The data are segmented into multiple segments and then encoded. An index and a checksum for each of the segments called metainfo are created. The metainfo is distributed to terminal machines within a network domain. After receiving the metainfo, every terminal machine obtains the segments, decodes the segments, and verifies the correctness of the received segments with the checksum. When requested by other terminal machines, the terminal machine reads the specific segments and then distributes those to the other terminal machines via a peer-to-peer data sharing protocol. The deployment is completed after all of the segments of operating environment are written in the terminal machine.