For pxe installation with iventoy - which is my only possibility - I need an ISO image instead of raw.
Any suggestions?
I assume working with a RAW image at these early development stages is more practical for KDE developers than creating a live ISO image.
In this case, many of us will be able to join in testing KDE Linux more fully when a live ISO image is available, hopefully with working options such as GRUB bootloader and manual partitioning, which will allow installing it in some pre-defined partition for testing purposes.
This will probably be possible when KDE Linux becomes ready for Beta release.
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Systemd needs to add iso support to repart so it works for mkosi which is what KDE Linux uses under the hood.
After some research, I found a relatively simple way to create a VDI file from the RAW file. This can be installed directly in Virtualbox. I was able to run KDE Linux in Virtualbox without any problems:
Installing KDE Linux in a VirtualBox machine
1. Create a bootable USB stick using the recommended ISO Image Writer. Important: The USB stick must be completely empty and must not contain any existing partitions (it is best to delete all partitions on the stick in the drive management).
2. Once complete, leave the USB stick plugged in.
3. Find out what the USB stick is called (e.g. with the command lsusb; in my case, the stick is called sda).
4. Unmount the USB stick.
5. Use the dd command to copy the contents of the USB stick to the file ‘output_image.img’. sudo dd if=/dev/sda of=/home/marcel/Downloads/iso-project/output_image.img bs=4M status=progress
(I created the iso-project directory for organisational purposes only).
6. Once complete, you will find the IMG file with the size of the USB stick in the corresponding project directory.
7. Finally, convert the IMG file to a VDI file, which can then be integrated into VirtualBox as an existing VM.
VBoxManage convertfromraw output_image.img kdelinux.vdi
8. Note: Remove the write protection on the VDI file before using it in VirtualBox.