CentOS - Jul 2014 - C6.5 - combine two DVD isos into one tree?

I have the two DVD isos for CentOS 6.5 mounted as loopback, on the mount
points /centos6 and /centos6a, and am trying to use them for PXE/KS
installation.

The problem I have is that the packages in /centos6a/Packages are not
found by the installer.

The host is a CentOS 5 system. Is there a way for me to overlay the second
DVD on the first without having to copy all the packages from both isos
into a new directory?

Or is there a standard path I can use to mount the second DVD that the
installer will use for packages that are not found on the first?

Or any other ideas? I'm sure I can't be the first to stumble over this!

Cheers
Tony
-- 
Tony Mountifield
Work: tony at softins.co.uk - http://www.softins.co.uk
Play: tony at mountifield.org - http://tony.mountifield.org

On Tue, Jul 15, 2014 at 04:15:44PM +0000, Tony Mountifield
wrote:
> Or any other ideas? I'm sure I can't be the first to stumble over
this!
Make a symlink tree from a third location that just points to all the
files, and point your boot infrastructure at that.

(assuming you're doing a http based install that "follow symlinks"
is
enabled on your web server).

-- 

rgds
Stephen

On 07/15/2014 12:15 PM, Tony Mountifield wrote:
> Or is there a standard path I can use to mount the second DVD that the
> installer will use for packages that are not found on the first?
>
> Or any other ideas? I'm sure I can't be the first to stumble over
this!
>
Use the 'mkdvdiso.sh' script found at 
http://wiki.centos.org/TipsAndTricks/CDtoDVDMedia to join the two ISO's 
into a single ISO, and then use that.  I've used this script for a 
while, with CentOS 6.2, 6.3, 6.4, and 6.5 to make the 'DL' ISO for use 
on an 8GB USB key (made with livecd-iso-to-disk).