Folks

I am trying to install CentOS 8.1 on a MacBook Pro, Retina 15, Mid
2015. I have a bootable USB stick with CentOS-8.1-boot (which I
think is the equivalent of a netinstall), and it boots. However, when I select the storage option, and choose to make more space on the SSD, go through the confirming dialogs, the installer complains that it was unable to save the information to the disk. A similar attempt using CentOS-7 netinstall successfully rewrites the SSD. This failure also occurs when I boot the CentOS-8.1-dvd.

Is there something else I should be doing?

Thanks

David