I’m trying to install CentOS 8 from a CD burned with CentOS-8-2-2004-x86_64-boot , to an SD card in a USB SD card reader.

The installer appears not to notice the card reader. Doing a df from tty2 also provides no notice of the card reader.

Can what I am trying to do be done?
The card currently has a German Knoppix on it. I know from experience that my machine can boot from it.

How do I make this happen?