'''++@doctr728++''' if your OS (whatever version Windows your computer currently runs) is installed on your eMMC then yes, you will have to reinstall.
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'''++@doctr728++''' if your OS (whatever version Windows your computer currently runs) is installed on your 32GB eMMC then yes, you will have to possibly reinstall. It will depend on what the “new” eMMC will have stored etc. You do want to make sure that you have some sort of access to your version OS. It is possible that you just need an update for drivers etc. but I would not bank on it.