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+++ This bug was initially created as a clone of Bug #749621 +++

This only happens with official image builds.  On boot, a kernel panic happens almost immediately.

Root Cause:

When configuring the boot menu for EFI, we extract the CDLABEL from the regular isolinux.cfg.  The cdlabel for official builds contains a '.' which our automated builds do not.  Because of this '.', the extraction broke causing the commandline to include root=live:CDLABEL= which causes an immediate panic.

verified on 6.3-20120531.0 build, 
1. can reproduce on 6.3-20120523.1, boot will run into kernel panic.

2. tested 6.3-20120531.0 with EFI mode, boot from the iso image successfully and after install finished, rhevh boot normal and can login also.

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
When the Hypervisor configures the boot menu for EFI it extracts the CDLABEL from the isolinux.cfg file. The entry in the file contains a period ('.'), which is not matched correctly by the regular expression used to extract the CDLABEL. As a result the kernel parameters generated contained an invalid CDLABEL, resulting in a kernel panic. The regular expression used to extract the CDLABEL has been updated to do so correctly.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

http://rhn.redhat.com/errata/RHBA-2012-0741.html