The invention relates to the technical field of installation of a host operating system for a machine room, and discloses a server-side configuration method for an unattended and remote installation operation system. The configuration method is carried out according to the following steps: 1 configuring a yum source, namely configuring the yum source which is installed from a compact disc; 2 configuring an IP (internet protocol) of a server, tagging the place which is marked with the IP in an IP configuration file, and substituting by virtue of a sed instruction. According to the server-side configuration method, a PXE (pre-boot execution environment) start server becomes friendly; meanwhile, the efficiency of configuring the PXE start server is improved; the technical threshold of a starting technology is greatly shielded, and thus the start server can be easily installed by workers without professional knowledge. Through the server-side configuration method, the PXE start server not only can be simply used for installing one version of linux operation system, but also can be used for installing different versions of operation systems, thus the practicability is improved.