I tend to use 4GB as a minimum size, but I expand my drive up to 8 GB and make 2 partitions and have a C: and on the same 'disk'. But I am just testing software, it is the minimum I would install windows into.
Best regards,
Edward
-- Edward L. Haletky vExpert XIV: 2009-2023, VMTN Community Moderator vSphere Upgrade Saga: https://www.astroarch.com/blogs GitHub Repo: https://github.com/Texiwill