Fedora 29: Failed to start Switch Root when using PXE
I got the Fedora WS live DVD (from here), then set up dnsmasq to boot from network with PXE. I am currently seeing the syslinux bootloader.
My PXE server is not connected to a network, so I want to boot the PXE client using the DVD ISO, so I also set up a nginx server that serves the content of the ISO (mounted on loopback).
The kernel is booting with: vmlinuz initrd=initrd.img inst.stage2=http://192.168.2.1/ inst.repo=http://192.168.2.1 (I found details on inst.repo here).
The problem is that, when booting, it fails with the message
Failed to start Switch Root
and journalctl says that
Failed to switch root: Specified switch root path '/sysroot/' does not seem to be an OS tree. os-release file is missing
What is this message and how do I fix it?
Edit
After RTFM, I managed to specify the root option almost correctly, and I booted with:
vmlinuz initrd=initrd.img inst.stage2=http://192.168.2.1/ inst.repo=http://192.168.2.1 ip=dhcp root=live:http://192.168.2.1/LiveOS/squashfs.img
where squashfs.img is the 1.9 GB root system used in the Live image. The system finally boots, but it is not the usual live image, as I have no options to install the system on the hard drive, so I think the options are still not completely correct.
Just take a look on the boot parameters of live cd. I don't know why it works but if you include:
kernel vmlinuz append initrd=initrd.img root=live:http://192.168.2.1/LiveOS/squashfs.img rd.live.image
Then it works. You don't need anything else to do a remote install or use the live cd via pxe.