I want to install Ubuntu on a mini PC which has only 3.5GB disk space. Do you have any recommendations?
4 Answers
Lubuntu 13.10 has a minimal desktop environment that is suitable for low-end hardware like your mini PC, however even Lubuntu requires at least 4.7GB of available disk space for best results.
Instructions for installing Lubuntu 13.10 and later on the mini PC
Boot the Lubuntu live USB.
Open a terminal. Type
sudo -i leafpad /usr/lib/ubiquity/ubiquity/misc.py
. Click on Options and select line number. At about line #853 will be something like "min_disk size = size x 2 #fudge factor", change 2 to 1.4 and then save.Run the Install Lubuntu. It should now say minimum disk size 3GB. Just be sure when you get to the disk partition/install part select Other and set up the drive as one ext4 partition as /. No swap; a page will come up saying you didn't make a swap partition, but just ignore it.
These instructions also work on Ubuntu and other *buntu distributions that also use the ubiquity live CD installer. In Ubuntu the default text editor is gedit instead of leafpad.

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If you want Ubuntu installed and not any one of these Small Linux Distros, you can install it to a USB Flash Drive or USB External Hard Drive. I have a USB Flash Drive that is 64GB and it barley sticks out of my computer. (64 GB Flash Drive on Amazon)
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@kamil Well then it is pretty darn hard you need to shrink the other partitions such as the Windows C:/ drive. – Dec 28 '13 at 05:23
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You actually have several options. Personally I love crunchbang.

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Just thought I'd ask, are you trying to dual-boot? Does the machine already have an OS and there is only 3.5GB left? Because now that I'm thinking about it, that would be a pretty small partition. You could probably install the OS, but not much else added onto it. – SomaComa Dec 26 '13 at 13:38
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it will be the only OS. I am using a mini pc to behave like dump terminal workstation for remote desktop using freenx and x2go and xrdp – kamil Dec 27 '13 at 07:05
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Ubuntu Mini Remix is a fully working Ubuntu install containing only the minimal set of software to make the system work. Ubuntu Mini Remix install is around 200MB. http://www.ubuntu-mini-remix.org
Hope this helps :) - @billy_hendry

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this is not user friendly like Lubuntu and is a terminal interface Ubuntu operating system. but this is the smallest you can get in the way of Ubuntu – billy_hendry Jan 10 '14 at 11:09
gksu leafpad /usr/lib/ubiquity/ubiquity/misc.py
Click on Options and select line number. At about line #853 will be something like "min_disk size = size x 2 #fudge factor", change 2 to 1.4 then save and run the Install Lubuntu. It should now say minimum disk size 3GB. Just be sure when you get to the disk partition/install part select Other and set up the drive as one ext4 partition as /. No swap; a page will come up saying you didn't make a swap partition, but just ignore it. thecure – karel Dec 27 '13 at 16:34