Whenever I try to boot an os (Linux mint) via usb, I get
*Ubuntu
And when I plug in the sever usb it says the server title.
I tried with 3 Linux os and all say *Ubuntu and not Linux mint/Kubuntu (tried both os’s)
How to I fix this issue? Thanks.
If Linux Mint says it’s Ubuntu, that’s incorrect and the Linux Mint developers should fix that. However, anything Linux Mint is offtopic on this discourse as it’s not an official Ubuntu flavor and adds its own repositories.
However, if Kubuntu says it’s Ubuntu, that’s correct. Kubuntu is not a separate distribution as it only uses the Ubuntu repositories. You will find that all of the official flavors, which are simply different default ways of installing Ubuntu, report as Ubuntu.
Basically, what it’s reporting is what’s expected. Cannot speak to the Linux Mint situation, you’d have to contact them.
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I wonder if what you’re seeing is a left over UEFI boot menu entry? Hard to say without a better description, but the article below might help?
https://www.linuxbabe.com/command-line/how-to-use-linux-efibootmgr-examples
Be careful with efibootmgr - deleting entries without being quite sure might render your machine unbootable, but from your description it sounds like it might fit.
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No. The only boot option other than the main two say *Ubuntu
Not Kubuntu
Or Linux mint.
And when I press the *Ubuntu it just starts the server not installing the os.
To completely remove an OS, you boot into a live Ubuntu (or flavour) session installed on a USB.
Then, you use the partition manager to remove the partitions, which you do not want or need.
Now, it looks like you cannot boot into a live session of Kubuntu - is that correct?
Power off the PC
Attach the USB with Kubuntu
Power on and use your PC dedicated key (e.g. F10 for Intel or F9 for HP) to access PC boot menu
What do you see?
Can you take a picture and post it here?
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For what it’s worth, Kubuntu will not say Kubuntu, as I stated above. Lubuntu, Ubuntu Studio, and Edubuntu have a huge banner that says their name, but the selection will still say Ubuntu.
Just posting for context. 
So I managed to get Kubuntu started (on the boot menu it said try or install Kubuntu)
I got the setup going, pass and username and all’s ettings:
And this is the error I get when I go to install Kubuntu
It has to do with Ubuntu server I think but I don’t know what the error even means or how to fix the issue.
While still on the liveUSB, open a terminal and post the output of this:
sudo fdisk -l
This too:
lsblk -f
While in testing mode?
Correct.
While you are in live testing mode, not installing.
The installer failed to create a partition table on ubuntu-vg
As you seem to have Volume Groups (vg) and undoubtedly Logical Volumes (lv), it may be appropriate to prepare the target disk before installation.
Boot into a live Kubuntu session but do not start the installer
Open KDE partition manager
Delete your existing ubuntu-vg partitions (probably 3 partitions)
After successful deletion > Select target disk > Device > New Partition Table > Choose GPT
Close KDE partition manager
Start installation