Split a MicroSD into 2 drives on Win 10

I bought a Lenovo MIIX310 mini laptop and inserted a 32GB MicroSD card into the slot.
I wished to split it into 2 drives and 2nd drive with the capacity of only 1 GB could be bit-locked and store confidential including all of my accounts and passwords.
I had tried to split it into 2 and format them by EaseUS and MiniTOOL in formats including Ext, FAT32 and NTFS. But the 2nd drive after the 1st one just could not show up After I clicked on My PC and saw all of the other drives. But the 2nd drive could be seen on EaseUS and MiniTOOL.
I need it to show up and I can thus with another PC with win 10 professional format this small 2nd drive into bitlocker protected drive.