Thursday, November 16, 2017

HF Noise monitoring system running from Live Ubuntu Memory stick with fully configured environment.

HF Noise monitoring system running from Live Ubuntu USB flash drive.

Ubuntu Live Noise Monitoring system with Persistence. 16Gb
I wanted a Preconfigured RF Noise monitoring system that I can run on my Laptop when ever I am not using it for something else.
I made this Ubuntu 16.04 Live memory stick .

This dongle is available from my Shop at http://www.giga.co.za/ocart/index.php?route=product/product&product_id=344

So how dose it work?
Configure your BIOS to boot from USB flash drive and you should then see the following screens.

Just pres enter to continue
If you see the error above just pres Enter  You should then get a screen where you can select how you want to boot your environment Persistent or not.
Select  the Persistent live boot.
Select the Persistent live option.
You could then see a screen for a few seconds looking like this.
Black screen before startup
This picture is of Ubunto 17.10 The Noise system is on Ubuntu 16.04
Here is some of the sunscreens of some of the functionality

HF Heat map
 Noise Graphs  (link to a live system)


Thursday, November 2, 2017

How to make a persisnt ubuntu LIve Memeory stick (16GB)

How to make a persistent live Ubuntu USB Memory stick (16GB)


16Gb Flash disk
I wanted to create a boo-table Ubuntu live flash stick that will also keep my last installed applications and not default back to standard when I reboot.

Ubuntu 17.10 Live with all my apps

You need to create two partition fat32 for the Ubuntu instillation from ISO file and a ext4 casper-rw partition for the persistent part. The compleet proses is done with a application called DUS.
Here is the process to install the DUS software
sudo add-apt-repository universe
sudo add-apt-repository ppa:mkusb/ppa
sudo apt-get update
sudo apt-get install mkusb usb-pack-efi
sudo apt-get install mkusb-nox usb-pack-efi
dus




Select the following on the screens.

1) Double-Click on the i option Install(make a boot device):
2) Double-Click on the p option Persistent Live and select the .iso file:
3) Click on the USB drive to make persistent. I want to use my 32 GB one so I mark the radio button:
4) Click Use Defaults to let mkusb choose default:
5) Enter a percentage of the drive to reserve for persistence. Mine is a large (32GB) so I allot only 20% ~ 6GB. The remaining space will be turned into an empty portable drive:
6) Double check very carefully and confirm. You don't want to mess up another drive.

Waite until 'Done' is written go and get some coffie :-)

 Here was my configuration

Cruzer Blade     sdb                                                    14.6G
                 |-sdb4 iso9660 Ubuntu 17.10 amd64         1.4G
                 |-sdb2                                                         1M
                 |-sdb5 ext4    casper-rw                             12.9G
                 |-sdb3 vfat    usbboot                                 244M
                 `-sdb1                                                        1.1M


ref : https://askubuntu.com/questions/397481/how-to-make-a-persistent-live-ubuntu-usb-with-more-than-4gb
and https://help.ubuntu.com/community/LiveCD/Persistence