Requirements

LVPM has been tested on installs created by Wubi and Lubi 7.04.01, and will likely not work on older versions. Before running, you will need to have 1 spare partition for the root filesystem, and another partition formatted as swap. Also make sure you have backed up all data, and have a rescue cd, such as the Super Grub Disk, in case something goes wrong with the bootloader installation.

Installing

1. Download and install the latest lvpm deb package from the download page.

2. Open a terminal, and run the command:
sudo lvpm /dev/targetpartition

Optionally, if you would like to keep your existing bootloader instead of installing grub onto the MBR, call the command with the option:
sudo lvpm /dev/targetpartition -nogrub

Where the /dev/targetpartition is the path to the partition you will use as the root filesystem. If it is on an scsi or sata drive, it will be /dev/sdxn, while if it is on an ide drive, it will be /dev/hdxn, where x is the letter of the drive number, starting at a, while n is the number of the partition number, starting at 1. For example, /dev/sdb3 would be scsi drive 2 partition 3, while /dev/hdc1 would be ide drive 3 partition 1. If unsure, use the command: "sudo fdisk -l" to list the drives and partitions.

3. Optionally, once the install has been completed, you may remove the original Wubi installation, and even the entire host OS (Windows), so that you can use exclusively Ubuntu. However, if you used the -nogrub option, you must keep the original bootloader, and may not uninstall it or remove the host OS without installing GRUB to the MBR using grub-install.

A more detailed guide, and the support forum for LVPM is located here.