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How do I fix the end Kernel panic Unable to mount root fs on unknow-block(0,0) Error when trying to install and run Ubuntu on virtualbox

ps flag

I am aware that there are questions similar to mine but after spending hours reviewing each one (and the answers provided), I was still unable to find a solution that worked for me. I think this is because I am using virtualbox and am unable to access the right terminal for my virtualbox machine in order to try out the solutions for the specific kernel error that I am having issues with. I think this because none of the fdisk commands are working on the terminal that I am on. Therefore, I kindly request that this question is not deleted until I find a solution to my problem.

Background info: As stated in the title, I am trying to install and run ubuntu on Oracle Virtual Box. I have ran into numerous problems and was able to fix them all however I am clueless as to what to do to fix the aforementioned kernel panic error. Before this error, I got another kernel panic that was about idle kill or something along those lines and I think changing my processors to 2 fixed that error. Prior to the idle kill kernel panic error, there was another error about my Windows Hypervisor Platform settings which I changed using both the "Turn Windows Features On or Of" GIU and the windows powershell terminal (In accordance with the tutorial I was watching). Although these problems may sound simple, they took about a half a day altogether for me to fix.

Current error: Now, I am facing the kernel panic Unable to mount root fs on unknow-block(0,0) Error when trying to install and run Ubuntu on virtualbox error. As far as I can tell, every single solution to this error online requires you access the command terminal of the machine you are trying to install the operating system on (note that I am using virtual box), and input some fdisk commands. I have spend over a day trying to access this terminal and just figured it out, but now I am faced with the issue of the fdisk commands not working on the terminal that I am on. To access the terminal, I go to the advanced options for Ubuntu which brings me to the GNU GRUB page and then press c. I would greatly appreciate all inputs on this problem. Thank you very much.

Picture of Kernel Panic

Advanced Options for Ubuntu GNU GRUB PAGE Terminal that it brings me to

Simon Sudler avatar
us flag
I removed the `12.04` tag from your questions - it seamed very wrong considering the kernel version
mpboden avatar
do flag
What OS and version are you trying to install? What ISO are you using? Is this a Desktop or Server installation? Have you tried booting into a Live USB/CD on the VM, which would then allow you to access the VM drive and run `fdisk`? If this is a new install and a new VM, have you tried to simply re-install or create yet another VM?
yzdanh avatar
ps flag
@mpboden Hi, I do not know the answers to some of your questions but will try to answer them to the best of my ability. I am trying to install Ubuntu 22.04.2 LTS. I am not quite sure how to find out what type of ISO I have but the file name is "ubuntu-22.04.2-desktop-amd64.iso" I suppose its the amd64 part that determines the type of ISO? I am not using any server so it is a desktop installation. No, I have not tried booting into a live USB/CD on the VM. I will have to find a tutorial on how to do this next, thanks for the suggestion.
yzdanh avatar
ps flag
@mpboden Although this is a new install, I have not tried re-installing anything since I saw a video on general Linux problem solving which stated that re-installing things is a "windows/macOS" way of trying to solve issues. Although it may sound like a trivial reason, I was hoping to be able to fix this problem without resorting to those methods . However its been a while since I had this problem so Im going to try re-installing as well (before I try rebooting into a live USB/CD).
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