When I switched over my home desktop to Mint, it was a very short time before I looked at Windows and said “I’m too old for this shit.” I mean, the reason I am a Mint fan in the first place is that I am a FOSS loving nerd but with a family and pets and hobbies and a career and a middle aged energy level. The decades I’ve spent fixing Windows based PCs is enough for a lifetime, thx.

I say consolidate old files you want to keep. Shuffle them between drives as necessary to be able to format everything. Go all ext4 on the drives you already have. (once you’re ready)

This is the way.