These are preview packages of hivex, febootstrap and libguestfs for RHEL 6.3. NOTE: These packages are NOT supported by Red Hat. I've made these available so you can see what will go into RHEL 6.3. To install these packages, create a yum repo file like this: cat < /etc/yum.repos.d/libguestfs-RHEL-6.3-preview.repo [libguestfs-RHEL-6.3-preview] name=libguestfs RHEL 6.3 preview - x86_64 baseurl=http://people.redhat.com/~rjones/libguestfs-RHEL-6.3-preview/ enabled=1 gpgcheck=0 EOF Then you can install the packages by doing: yum install '*guestf*' To see what has changed, look at the changelog: less /usr/share/doc/libguestfs-devel-*/ChangeLog To go back to the supported version of libguestfs that is in RHEL 6, remove the repo file and the packages: rm /etc/yum.repos.d/libguestfs-RHEL-6.3-preview.repo yum remove '*guestf*' 'febootstrap*' '*hivex*' and then reinstall the RHEL 6 packages from RHN. Please send feedback or discussion about libguestfs features to: http://www.redhat.com/mailman/listinfo/libguestfs and/or: rjones@redhat.com If you find bugs: https://bugzilla.redhat.com/enter_bug.cgi?component=libguestfs&product=Red+Hat+Enterprise+Linux+6 If you have major problems, please post the complete unedited output from running libguestfs-test-tool: libguestfs-test-tool Thanks for helping to test these packages! - Rich.