An enterprise management system is described for efficient operating system migration, preserving applications, data, and settings. A staging area, such as an empty folder, is created on a client device. A base layer for the new operating system and application layers for applications that will be installed on the computing device are downloaded to the staging area. After the base layer and application layers are downloaded, the layers are merged onto the computing device to instantly install the operating system and the applications. User settings, data, and other applications can be migrated to corresponding locations in the new operating system from the old operating system.