Installer Cannot Continue - Wrong Disk Space

When trying to install the CUDA Toolkit (10.2), I made sure to specify the drive (H:, if you’re curious). However, I hit this error when installing: “NVIDIA Installer cannot continue To continue, free up additional disk space.” Then it tells me I need 1.1 GB on the C: drive. If I click the back button, I can see all three installation locations are still set to H:, which has 508 GB free. But if I try to continue again, it still seems to be trying the C: drive.

Any ideas?