I am trying to legacy install an MBR installation on a UEFI machine. It will partition it but it fails - Calamares line 153 or something about failing to install boot loader. Installing UEFI it installs 100%. I use a front dock with SSDs to test out distros on this computer, i7 3930 32 gig RAM. I don't keep a single distro installed. This isn't my main computer. If I install UEFI it places the KAOS install as a boot device in the BIOS. as soon as I pop that SSD out and pop in another one to keep trying out another distro the KAOS boot device in the BIOS disappears and the KAOS will not boot from that SSD again. This is why I am trying to get it to legacy install. I tried the work around to open Dolphin and mount all the partitions which did not help. It still fails - Run script bootdr/main.py and line 153 and 137 failing to install the boot loader. In my main computer I use the same system and have to fall back to windoze 7 for graphics work so can't use the default KAOS UEFI boot as much as I would like to. I've tried every option I could think of in the installation partition manager. My "default" partition scheme is 25 gig or so for / (the OS), a small swap partition (though with 32 gig of RAM that is not needed), and then whatever space is left, depending on the size of the SSD for my /home partition. No dual booting. The single distro "owns" that SSD. I have several distos with different desktops installed on various SSDs all the time. What is the trick to getting this to install on an "old school" MBR drive? It is a real pain having to do a complete install and updates to see how the latest updates work and what all is new in the repositories. At first they were pretty sparse but the latest release 2015.4 has enough to make this an installable and daily useable system.