pureos-9.0-gnome-live_20190926-amd64.hybrid.iso

Following Advanced Installation Guide with the following exceptions:

• Create bios-boot and a single / partition only
• Create / partition encrypted LUKS

Install runs until about 41%, then feezes.
Install canceled after syslog tail of mounted read-only error and subsequent repeated associated (sorry, no log)
Cancel closes calamares

It looks like apt-get --purge (installer.log l440) tries to remove from a read-only volume?

Attached installer.log