Are the errors from Mindi or Mondo? Look at /var/log/mondo-archive.log, /var/log/mindi.log or the mondo.err.xxxxx.tgz log indicated by the screen message. Pipe screen errors which relate to the creation of boot disk(s) and or data disk(s) to a text file.
See the web site for details. If you are going to e-mail the list then please attach that text file (zipped!) and tell me:
Your kernel version
Your Linux distro's name and version
Whether your kernel supports initrd and loopfs; it should!
What sort of PC you are using, including hard disk configurations
Mondo is freely available and you are given it for no charge. When you e-mail the mailing list, please bear that in mind.