I have now managed to resolve this issue with the help of the support forum http://ubuntuforums.org/showthread.php?t=515594 (many thanks Midahed). The main issue was that the article listed above uses the initrd tools to create a boot image but Ubuntu now uses initramfs-tools for this.
Once I realised that instaling mdadm was actually creating a new boot image, I was able to copy this across to md0 and then select this at boot time to get into the system. Once booted from md0 I could then use update-initramfs -k 2.6.20-16-generic -c -t to create a boot image with the latest Kernel (live cd at 2.6.20-15). -- /dev/md0 does not exist. Dropping to a shell. https://bugs.launchpad.net/bugs/128313 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs