I was finally able to build an x86 live CD image, but there are a few
things about the build process I don't understand.  Here are the
directions for building the live CD as I understand them:

1. Build nfsroot using these spec files in this order:  stage1.spec,
stage2.spec, stage3.spec, nfsroot_stage4.spec

2. Bind mount nfsroot to
/var/git/clustering-livecd/catalyst/livecd/2008.0/overlay/tftproot/nfsroot/x86

3. Start building the live CD using these spec files in this order:
stage1.spec  stage2-desktop.spec  stage3-desktop.spec

4.Unmount nfsroot

5. Run catalyst with these spec files: nfsroot_stage4.spec
livecd-stage1-minimal.spec

6. Bind mount nfsroot again

7. Run catalyst with this spec file: livecd-stage2-minimal.spec

My questions are:
Why is it necessary to bind mount nfsroot in step 2?
Why do we run nfsroot_stage4.spec again in step 5?

Thanks.

-Tom Stellard