If both the alternate and desktop CDs break, that's a pretty sure sign that the CD driver for your hardware is not very happy. I don't suppose there's any way for you to get us the output of 'dmesg'?
** Changed in: linux (Ubuntu) Sourcepackagename: base-installer => linux -- 8.10 installer fails to mount cdrom https://bugs.launchpad.net/bugs/269418 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs