Try using Kicksecure ISO Live Mode and apply a Temporary Kernel Boot Parameter Change by adding kernel parameter:
rd.live.ram=1
Boot.
Then try to remove the boot medium.
dracut cmdline man page:
Try using Kicksecure ISO Live Mode and apply a Temporary Kernel Boot Parameter Change by adding kernel parameter:
rd.live.ram=1
Boot.
Then try to remove the boot medium.
dracut cmdline man page: