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[kubuntu] Installing Plop on a disk with encryption

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http://ubuntuforums.org – I have a computer where both / and /home are encrypted with LUKS. I'd like to install Plops boot manager though. I'm worried that it will overwrite data when it installs, because the Plop installer runs before the encrypted disks are mounted, so I don't think it has any way of knowing that it's about to overwrite encrypted data. To test this, I installed Kubuntu 12.04 on VirtualBox with full disk encryption, and then installed Plop. When I reset the VM, Plop started up. However, when I told Plop to boot from the hard disk, it gave an error saying there is no valid boot signature, asking i (Hardware)