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Sounds correct. So my real issue is that I never used LVM commands like pvcreate, lvcreate and just dd cloned the disk.<br />
Without using pvcreate, I ended up with the same GUID. Oh well, LVM is nice for some things but it makes cloning boot disks<br />
a bit more of a headache. Thanks for your help. I accepted that answer.
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Sounds correct. So my real issue is that I never used LVM commands like pvcreate, lvcreate and just dd cloned the disk.
Without using pvcreate, I ended up with the same GUID. Oh well, LVM is nice for some things but it makes cloning boot disks
a bit more of a headache. Thanks for your help. I accepted that answer.

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Maybe this does help:<br />
<a href="http://tldp.org/HOWTO/LVM-HOWTO/" rel="ugc">http://tldp.org/HOWTO/LVM-HOWTO/</a>
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Maybe this does help:
http://tldp.org/HOWTO/LVM-HOWTO/ [http://tldp.org/HOWTO/LVM-HOWTO/]

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I have cloned one RedHat disk to another using &quot;dd&quot; but now cannot boot unless one disk or the other is physically removed. The disk uses LVM with the /boot using lvm2 format. I think the problem is that GRUB sees identical boot blocks. Is it possible to change an lvm2 format boot LABEL so that GRUB sees 2 different labels? This is easy for ext2 or ext3 using e2label but I have found no way to change an LVM, lvm2 format, label for /boot. <br />
Thanks in advance,<br />
M 
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I have cloned one RedHat disk to another using "dd" but now cannot boot unless one disk or the other is physically removed. The disk uses LVM with the /boot using lvm2 format. I think the problem is that GRUB sees identical boot blocks. Is it possible to change an lvm2 format boot LABEL so that GRUB sees 2 different labels? This is easy for ext2 or ext3 using e2label but I have found no way to change an LVM, lvm2 format, label for /boot. 
Thanks in advance,
M 

GRUB boot problem after LVM Redhat Disk clone (Can the LABEL be changed on lvm2 ?)

A Linux distribution is an operating system made as a software collection based on the Linux kernel and, often, on a package management system and are available for a variety of systems. A typical Linux distribution comprises a Linux kernel, GNU tools and libraries, additional software, documentation, a window system (the most common being the X Window System), a window manager, and a desktop environment. Most Linux systems are open-source software made available both as compiled binaries and in source code form, allowing modifications to the original software. Over three hundred distributions are in active development, including commercially backed distributions (such as Fedora, openSUSE and Ubuntu) and community-driven distributions (such as Debian, Slackware, Gentoo and Arch Linux).