- May 1, 2017
- 2
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- 510
I finally got a working copy of Windows 8.1 retail 64-bit, but made the mistake of installing it on an old machine that only supports BIOS/MBR. What I'd like to do is take the hard drive out, stick it into a newer machine, wipe it clean, convert it to GPT, then re-install Windows via UEFI. Can I just re-enter the same product key, or do I have to call Microsoft for this one?
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