Public bug reported:

Binary package hint: debian-installer

I have begun installation of Ubuntu Server (64-bit) 10.04 LTS.  I
selected to Guided Partitioning with LVM, and investigated the suggested
layout of the partitioner.  I didn't like it, so I decided that I wanted
to adjust the physical partitions.  I attempted to delete the LVM
physical partition, which is forbidden due to the existence of a logical
volume group (that I don't like).  So I attempted to delete the volume
groups, but was unable to do so.  Investigating my options, I found that
proceeding to the next stage (to write the LVM data) warns me that I
cannot come back to modify physical partitions once the volume groups
are defined.  Fine, I don't want them anyways, I want to change the
layout.  There is no option to delete them (the logical volume groups)
however.  I attempted several things to find some way to delete the
volume group to no avail.

Finally, I decided to reboot the system and see what I can do.  I
selected "manual" to set the partitions, and the volume groups were
displayed to me... again I am unable to delete them.  Okay, fine.. bye
bye partition table.  I issued dd if=/dev/zero of=/dev/sda count=8192 to
wipe out the partition table on the disk and start again.  I exited the
shell, went back to the "detect disk" phase, and the physical disks are
gone... but the volume group remains.  Aaaaahhhhh!  Why won't this thing
just die!

As you can imagine, it is very frustrating to be in an installer trap
such as this.  I'll see what I can do to wipe out the stupid volume
groups that won't die, I'm not concerned about that... but it is
definitely a bug to not have the option to truly manipulate the setup of
the disks.  I don't recall being given an option to just wipe things out
and start again...

** Affects: debian-installer (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/694191

Title:
  LVM Impossible to Configure

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