Can you please run the installer in debug mode (select "Try Ubuntu", wait for the desktop to load, press alt-F2 and type `ubiquity -d`) until you get to the partitioning screen where your disk is not appearing. Press alt-F2 again and type `apport-collect 556225`. This will attach debugging logs to this bug report, which will be necessary for us to diagnose the bug you're seeing.
Can you please run the installer in debug mode (select "Try Ubuntu", wait for the desktop to load, press alt-F2 and type `ubiquity -d`) until you get to the partitioning screen where your disk is not appearing. Press alt-F2 again and type `apport-collect 556225`. This will attach debugging logs to this bug report, which will be necessary for us to diagnose the bug you're seeing.
If possible, please do this with the latest daily-live CD (http:// cdimage. ubuntu. com/daily- live) rather than beta 1.
Thanks!