The full English name of RTM version is: Release To Manufacturing. Before the official release of the operating system, it needs a period of tabletting, packaging and distribution, so the final code must be completed some time before the official release. After the final program code is developed, the master film will be sent to the factory for tabletting to make the system CD. This version is called RTM version. As can be seen from the above description, the RTM version of the program is exactly the same as the official version. But there are some differences between RTM and the official version. For example, the OEM in the official version cannot be upgraded and installed. If the upgraded version is to be fully installed, it will check the CD of the old operating system. The above is the difference between RTM and the official version, but their main program codes are the same. Strictly speaking, RTM version already belongs to FPP retail version, which requires key activation, but it is slightly different from the official version. The RTM version is just the same as the official version of the code, and there is no RTM version of the CD. RTM version is pressed into CD, which can basically be called retail version.

For more information about the differences between MSDN, RTM, OEM and VOL, please refer to:

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