I'm new to Windows 98 since about 20 years. Got a $50 toshiba portege off ebay, and after realizing it only had a 1GB disk I got a PCMCIA card that takes a 32GB SD card.

The default driver I tried made Windows crash, so I tried the built-in Acculogic IDE controller, which worked!

To my surprise the disk showed up twice:

What alarmed me was that if I add a file to 1 disk, it doesn't show up on the second. If it did (after a refresh) I would have assumed there's 1 system managing this disk.
However, changed on 1 disk don't show up on the second until a reboot. This suggests to me that there's 2 things accessing the disk with their own cache potentially creating conflicts and corruption.

I'm curious if others have seen this and how I can fix this