I have Ubuntu 16.04 64b Desktop installed on a HP Touchsmart (with LVM); associated with I that spent quite some time setting up an unusual application with it. Now I need to run another different application but it will not install & run properly on 16.04, instead requires 14.04 (per its vendor).

So...I went to install Ubuntu 14.04 LTS Desktop expecting to set up a dual-boot configuration during the installation, but the 14.04 Desktop installer (running from DVD) reports back that it does not detect any existing OS installed already, and wants to wipe my HDD data. I do NOT want to wipe out my existing 16.04 installation with my primary app for that, as it was too much time/trouble to get everything working right.

How can I accomplish this dual boot with existing 16.04 and adding 14.04? (I haven't found a searchable answer, as all the other dual-boot Q&A seems to deal with an existing Windows OS.)


Press super key Enter Gparted Select it Select any big ext4 disk right click>unmount again right click>resize partition....reduce some space and make around 70 to 80 gb space which is unallocated.. apply settings make bootable pendrive of Ubuntu 14.04 and follow this.. Boot ur pendrive And select install ubuntu and then... (Images are of 16.04 doesn't matter and here free space is 150 u can allocate accordingly) i will prefer install alongside if u wish to do it manually do these enter image description here

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Neglect along side windows option this is not your case. select something else Continue installation...reboot after completion.. hope this helps :)

Edit :FOR LVM RESIZING REFER TO How can I resize an LVM partition? (i.e: physical volume)

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  • Check which system (legacy or UEFI) ur previous Ubuntu is installed in... accordingly boot your pendrive – minigeek Sep 20 '16 at 5:16
  • My system is not a UEFI BIOS system. Furthermore, the BIOS does not provide an option to boot from USB, only removable bootable source is DVD; thus I am trying to install OS from DVD. – EEEEHAW Sep 20 '16 at 15:54
  • I had a problem right away out of the starting gate: there appears to be no Gparted on the installed 16.04 LTS Desktop (64b). Could there be another partition editor under a different name in this OS? – EEEEHAW Sep 20 '16 at 15:57
  • U can manually install gparted> sudo apt-get install gparted – minigeek Sep 20 '16 at 16:48
  • After entering that apt-get command (and after supplying password) I get an error message: "E: Invalid operation gparted". – EEEEHAW Sep 20 '16 at 18:38

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