I did a complete reinstall today of Ubuntu 16.04 (my SSD was encrypted, which prevented me from resizing the partition. This got old, and I didn't feel like going through the command line mess to get rid of it and possibly messing up). I have another Linux distro that I've been using via Live Persistent USB, but it's simply too slow, so I want to put it on my hard drive.

Here are my partitions:

Ubuntu Partitions

I obviously can't unmount sda2 while it's running, so how do I go about doing this?


The reason for that you try to resize system sda and system is running.

To solve that:

  1. Make bootable usb and boot .
  2. Instead of install -> try ubuntu .
  3. Open gparted installed by default and resize.
  • He said his SSD was encrypted, so this would not work unless he has a self-encrypting drive which the BIOS asks you to unlock at boot time even if it isn't booting from the SSD. – insert_name_here Jun 9 '16 at 0:55
  • @insert_name_here i have also SSD encrypted and i do the same – Mohamed Slama Jun 9 '16 at 0:57
  • @insert_name_here It's no longer encrypted. I completely wiped my OS and restarted with a fresh new (unencrypted) distro. I'll try the live boot/gparted thing, and come back to accept the answer. :) – DevOpsSauce Jun 9 '16 at 1:06
  • @MohamedSlama Do I need to reinstall after doing this? – DevOpsSauce Jun 9 '16 at 1:07
  • 1
    @MohamedSlama And done. Thanks! I know what to do in the future now. Now I just need to figure out how to add the second OS. – DevOpsSauce Jun 9 '16 at 1:32

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