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I recommend you to unplug the second drive just to be safe. When you make major changes to your system, such as upgrading the operating system, you must always back up.

Code GFC symbolizes the product depending on the location in most cases and in some cases, this has to do with the versions.

The GFC-00019 is a commercial container 32 and 64-bit disk operating system version. TheGFC-00564 is a 32 bit OEM version. A commercial version can be installed on any computer. But always alone at the same time. But if you install on a computer (and then he got damaged without repair possible) and then I bought another you can install it on the new computer.

An OEM copy can only be installed on computers. If this computer got far beyond repair that you can not use it again as with the retail version. You can install the OEM as many times as you like on the original computer.

Tags: Windows

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