I managed to make my 8.0GB USB flash drive boot the current SME Server 8 beta ISO image. The installation program starts when I boot from USB, and configuration of install options worked fine.
After pressing "Install now", the installation starts, then ends with a python exception error:
IOError: [Errno 30] Read-only file system
I tried it twice and got the same error. What does this mean, and how should I alleviate this problem?