I can't find out how to do it, I can see them but I cant connect to them.

Here's the listing im thinking about: https://www.amazon.ca/SanDisk-SDSQUAR-256G-GN6MA-Ultra-256GB-microSDXC-Adapter/dp/B0758NHWS8/ref=sr_1_3?keywords=micro+sd&qid=1575306265&smid=A3DWYIK6Y9EEQB&sr=8-3 Im thinking of doing a multiboot so id probably have a few smaller partitions rather than one big ...