Not every distribution comes in a live-CD/USB format. The majority are just installers. The ones that let you mess around with a sample system before installing are just a handful of particularly fancy ones.
The most harmless way to try these out is with a virtual machine. You could use VirtualBox or Virt-Manager and boot the ISO in a VM, give it maybe 20GB for a virtual drive, and delete it when you don't want it anymore.
Not every distribution comes in a live-CD/USB format. The majority are just installers. The ones that let you mess around with a sample system before installing are just a handful of particularly fancy ones.
The most harmless way to try these out is with a virtual machine. You could use VirtualBox or Virt-Manager and boot the ISO in a VM, give it maybe 20GB for a virtual drive, and delete it when you don't want it anymore.
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