Ensure that both drives are recognized in the BIOS. If they are not, the issue might be hardware-related.
If the drives are recognized in BIOS but not in Windows, you can try rolling back the recent updates.
Boot your computer and go into Safe Mode.
Once in Safe Mode, go to Settings > Update & Security > Windows Update > View update history > Uninstall updates.
If rolling back updates doesn't work, consider performing a System Restore to a point before the updates were installed.