Questions tagged [live-cd]

Questions related to live CDs, which allow you to test drive Ubuntu without installing it.

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how can I boot install iso from loopback in grub?

In the history, I can use iso_scan or loopback.cfg to boot: loopback loop $isofile linux (loop)/casper/vmlinuz boot=casper iso-scan/filename=${isofile} verbose initrd (loop)/casper/initrd* Or ...
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0 votes
0 answers
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How do I add additional snaps to Ubuntu 22.04 Live?

I'm trying to add some snaps to a live USB. I tried the directions given in an answer to another question, but they don't seem to work on the latest LTS. After following those steps and booting the ...
0 votes
0 answers
40 views

Create Ubuntu LiveCD that boots into RAM and run a custom script

I have a simple question. Is there any way I could create ubuntu LiveCD that would boot into RAM and run a simple shell script that I have? I tried using CUBIC, but with CUBIC I am being able to ...
0 votes
0 answers
569 views

Help with Ubuntu 22.04 and realtek wifi driver

I am absolutely stumped as to how to get my realtek 8821ce driver onto a backup USB drive. I have tried everything from downloading/copying/installing binaries, dependencies, source, using Ventoy, ...
0 votes
0 answers
56 views

Modify a custom ubuntu live image to run a script when I install it

I am trying to create a custom live Ubuntu image (iso) that I will be using later on to install it on different servers that we have. So far, I have been using CUBIC (custom ubuntu Iso Creator) to ...
0 votes
0 answers
40 views

How to accomplish some tasks within cubic with the goal to create a custom Ubuntu image ready to Pass-Through an nvidia GPU

I'm trying to understand how to customize Ubuntu 22.04 to satisfy my needs and also because I want to re-distribute a version of Ubuntu ready for the users who wants to passthru their nvidia gpu ...
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0 answers
609 views

Ubuntu 22.04 LTS Desktop - DHCP DNS servers ignored

Relatively new to linux and just needed to run through something: I've noticed that with Ubuntu 22.04 there is no way to disable the dns stub listener at install time nor run time on the live cd ...
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0 answers
182 views

How to fix: Failed to start default target: Transaction for grafical.target/start is destructive with BTRFS errors?

After installing Linux Ubuntu 22.04 on usb-stick some applications did not work (for example: “Ubuntu Software”). I tried reinstalling this app with this video tutorial: https://youtu.be/9pq7in1DTe8 ...
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0 answers
26 views

Ever clean ubuntu start

I want to install a ubuntu SO on some laptops. This laptops will be used for studens between 12-16 years old, so to avoid problems I would like to start the ubuntu every time from a clear .iso (like ...
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Panic happened when create VM from live system ISO created myself

:cry: I followed this instruction: https://ubuntuforums.org/showthread.php?t=688872 Panic: panic - not syncing attempted to kill init Could you plz help me out ? enter image description here
0 votes
0 answers
212 views

Boot live .squashfs image from partition

Previously on Debian Jesse on Raspberry PI, I did a solution that was booting the system from one of squasefs images and overlayfs in the second partition (and alternatively boot to "main" ...
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How to update the kernel for a live CD Linux image

I've a customized LiveCD image based on Ubuntu. It's a small image has just the required software to get the job done. The thing is that this image doesn't have modules for newer hardware such as a ...
-3 votes
1 answer
490 views

Is linux kernel boot parameter root=live:LABEL=$iso a valid option for Ubuntu Live booting, e.g. Lubuntu 20.04 LTS?

Is linux kernel boot parameter root=live:LABEL=$iso a valid option for Ubuntu Live booting, e.g. Lubuntu 20.04 LTS? I was making various GNU GRUB 2.04 menu entries to boot into a live session of ...
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0 answers
98 views

How do I get a live USB install without the install prompt? [duplicate]

I have a Ventoy drive with a handful of ISOs for testing purposes. Since it's for testing and troubleshooting systems, it's useful for reaching the desktop to be quick. For my use case, the prompt to ...
0 votes
1 answer
155 views

How to create an Ubuntu live iso that does not install os but runs a simple script

Goal: Create an Ubuntu Server 20.04 bootable ISO that: Does not install Ubuntu Obtains an IP and network settings via DHCP Just runs a bash script after boot Drops to a shell once the script has ...
0 votes
1 answer
317 views

How to change user id for live user?

Web search found How can I change my own user ID?. However there is no 999 (ubuntu) user in /etc/passwd in distro iso file (in casper/filesystem.squashfs), home folder is empty. AFAIK it means live ...
-3 votes
0 answers
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Where to begin with using Linux [duplicate]

I do not know where to begin with installing/using Ubuntu. I am somewhat literate with Dos programming and use Win 10 Pro on my 17" Envy HP Laptop. Have not found anyone at the University who ...
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initramfs shows up when I use Ubuntu Studio 20.04

I have a strange problem: Ubuntu Studio is on another hard drive. I don't use it every day, but when I open Ubuntu Studio 20.04, an error with initramfs shows up. I tried to use a live CD and used the ...
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0 answers
18 views

Unable to re-enable wifi

Context: I'm running ubuntu 18.04.2. I went to some effort to configure headless remote access to this machine, unfortunately one of the side effects of the xorg.conf changes is that I now don't get ...
-4 votes
1 answer
1k views

When using Ubuntu live CD, files and folders cannot be copied or moved due to permissions

I want to use an Ubuntu live CD and copy a folder between my two Windows hard disks. However, I get an error saying that I don't have permission to do it. How can I do this?
3 votes
0 answers
26 views

How to convert Ubuntu VirtualBox VM to .iso format? [duplicate]

I have configured Ubuntu 20.04 in VirtualBox. I have installed some software and applied some settings. Now, I want to convert this image to a .iso image so that I can install this customized Ubuntu ...
0 votes
1 answer
109 views

Ubuntu doesn't support USB wifi card in LiveCD mode - any way i can fix this?

Been trying to test out Ubuntu in livecd mode, hoping to install it but whenever im in livecd mode my USB wifi card simply just isn't supported. everything else seems to work, but just not the wifi. ...
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0 votes
0 answers
43 views

Ubuntu live CD shows windows network despite fresh HDD & unplugged cable

I suspect that I had been hacked after I found a remote connection file in Windows that was set to execute a file called "Remote connection phone" or something. After booting into ubuntu ...
2 votes
0 answers
1k views

How to Headless Install Ubuntu 20.04 Desktop Environment for the Raspberry Pi 4 using UART Pins (TTL to USB Serial Port)

I want to install Ubuntu onto my Raspberry Pi 4 using the desktop release build, not the server release build, because I do not have the time for the Pi to install all the huge packages and massive ...
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15 votes
3 answers
3k views

What does "LiveCD" mean?

For example, I have seen the term "LiveCD" in this web page: https://help.ubuntu.com/community/LiveCDCustomization Why is it called a "LiveCD"? And is ubuntu-20.04.2.0-desktop-...
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286 views

Using tar command to backup file

I am using a live cd to take backup of a file.This was my problem. Now I want to use tar to backup a single file Phone academics where I have accumulated other files and I want to create the backup in ...
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1 vote
1 answer
1k views

How do I pre-install a program on a Live CD to boot? [duplicate]

I would want "program.deb" to be pre-installed to a Ubuntu Live CD.
5 votes
2 answers
7k views

ubuntu 21.4 desktop iso burned to dvd fails to start

The ubuntu-21.04-desktop-amd64.iso burned to a dvd fails to start live session giving a bunch of error messages like: Failed to start Snap Daemon Failed unmounting cdrom Failed to start Holds Snappy ...
0 votes
0 answers
70 views

How do I read a Windows XP hard drive using Ubuntu on a cd?

I downloaded Ubuntu onto a cd and booted my laptop with it. When it was loading up it said something about checking filesystems. I just let it run until it was done. It then gave me an option to try ...
0 votes
0 answers
69 views

ubuntu LiveCd enable user login

I am customizing Ubuntu 18.04 and want to boot from a USB drive. As the LiveCD does automatically log in, I Want to enable user login while booting. Can someone pls help me to enable user login for ...
0 votes
0 answers
41 views

Customize XFCE on Xubuntu custom Live CD [duplicate]

I followed https://help.ubuntu.com/community/LiveCDCustomization and my custom iso worked, it booted and I have apps I installed and a few scripts I added. I'd like now to customize the GUI: keyboard ...
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0 answers
117 views

how to custom ubuntu live CD with gcc installed

I want to make an Ubuntu image with gcc so that I can run gcc directly after the system is installed. The version of Ubuntu is Ubuntu Server 20.04.2 LTS. How can I package the gcc related installation ...
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0 answers
431 views

What does Ubuntu Live CD use to merge multiple *.squashfs files, from the casper directory, to single unified filesystem, UnionFS or AUFS? Or else?

Answer to this would really help me out with the master thesis. I created custom Ubuntu 18.04 Live CD .iso image that comes preinstalled with certain packages (NodeJS, Chrome, Java, MongoDB). However ...
0 votes
1 answer
688 views

How to use ubuntu-20.04.2.0-desktop-amd64.iso as a live CD

I am planning the upgrades of my MythTV box and laptop from 16.04 to 20.04 via 18.04. I have downloaded the .iso images for both releases, burnt them to a DVD, and tried them on the laptop prior to ...
4 votes
2 answers
1k views

How to modify partitions without a live USB/CD

Plenty of people struggle when they want to modify partitions on their running system. Frequently its because the partition they want to modify is mounted and when they run GParted the partition is ...
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0 votes
1 answer
166 views

Use Livecd to recover ubuntu

I accidentally deleted /usr/share. My system is unbootable now. I have a backup of /usr/share in the form of simple copy and paste. But my linux ubuntu 20.04 system is un writeable upon booting with ...
0 votes
0 answers
78 views

Backup installed packages from LiveCD

I recently messed up when trying to install an application which resulted in me doing a chown command that requires a reinstall of Ubuntu. I would ideally like to backup all the installed packages I ...
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2 votes
1 answer
3k views

How to have Ubuntu read the file in windows hard drive which became RAW?

I have a 2TB USB Windows hard drive which suddenly became RAW. The hard drive contains only HD movies, mkv files. There's no OS there. From this link and this link, it seems I may get the chance to ...
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0 votes
0 answers
55 views

LiveCD ver 20.4.1 for AMD64 does not run

Live CD loads and runs on a multi-core AMD-64 box. The same CD over on my single-core AMD64 is giving me no joy. I end up with a splintered screen with horizontal lines, no menus and I have to bomb ...
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0 votes
1 answer
879 views

How to reset the root password of the Ubuntu system on Live CD?

Recently I got a customized Live CD image of Ubuntu 18.04.3 to install a customized Ubuntu system on a Hyper-V virtual machine on my Windows computer. However, I have only obtained the password of a ...
0 votes
2 answers
2k views

Ubuntu 20.04 infinite loop on reboot, with three services of systemctl

Ubuntu Mate 20.04 crashed and enters an infinite loop on reboot, trying and failing to start the following systemctl services: Stystem Logging Service (rsyslog.service), D-Bus Message System Bus (...
1 vote
2 answers
543 views

Why can't I extract _all_ of the ubuntu-20.04-live-server-amd64.iso initrd?

I can download the server live CD: $ wget http://releases.ubuntu.com/20.04/ubuntu-20.04-live-server-amd64.iso I can extract its contents: $ 7z x -aoa -o./ubuntu-20.04-live-server-amd64.iso.d ubuntu-...
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0 votes
0 answers
436 views

Create a LiveCD Distrobution .iso From Scratch

What have I done: Started with the Ubuntu Mini.iso 20.04 I have basically created a custom build in a VM environment I have installed xfce4 as the the Desktop engine. I have installed Nemo and set it ...
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2 votes
1 answer
4k views

Install Ubuntu 20.04 DESKTOP with Software RAID 1 on two disks

So I have looked far and wide (but maybe not enough) for the answer. Historically, you could avoid the LiveCD and use the alternateCD / text installer to configure software RAID 1 on two internal ...
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1 vote
0 answers
280 views

Problems with creating an encrypted livecd that works on USB/DVD/CD

Summary of the Problem I've created a custom ram-only Ubuntu image that refuses to boot over USB on any device. Before I encrypted it and used a loop device, it worked well. With the encryption setup,...
0 votes
0 answers
90 views

Virtual machine into ISO

Can i customize an ubuntu image with a new theme, background and programs etc... and then convert it into an iso so i will be able to install the same operating system on a physical computer? I was ...
1 vote
1 answer
429 views

GNURadio Live CD installed on HDD adding persistence [closed]

I installed gnu radio live cd on my hdd as a third OS on my laptop. Now I can boot in all three of them. But I want the Gnu radio to have persistence as in each time I boot it starts as a live OS. Is ...
1 vote
0 answers
261 views

Ubuntu Live Session Installation Problem

Problem: Can’t install a live session of Ubuntu 18.04.3 What I’ve done: a. Downloaded the install program twice and burned it twice to 2 different DVDs with disk verification. b. Allowed both ...
1 vote
2 answers
416 views

Live CD not live DVD

I have a very old PC that currently has no functioning HDD and only a CD-ROM drive (no DVD-ROM). There is no way to boot it from a USB drive. Can I still get a Ubuntu Live CD image that could be ...
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-1 votes
2 answers
480 views

How to install Ubuntu LTS (18.04) on a system for which disk drivers are existing only i the most recent, non-LTS version?

I am holding in my hands a cool ASUS UX481F (ZenBook Duo) that works surprisingly well out-of-the-box (including network and disk) with Ubuntu 19.10 live USB, but the Ubuntu 18.04 both liveUSB and ...

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