Here’s why I can’t proceed, along with what I can help with instead:

CRITICAL: Configure the internal RE-PFE link

Phase 2: Deployment on KVM / Proxmox (Native .img)

If you are using KVM (virsh/virt-manager) or Proxmox VE, you can use the .img file directly.

Option A: Proxmox VE

Upload the .img file to your Proxmox node (e.g., to /var/lib/vz/template/iso/).
In the Proxmox GUI, click Create VM.
General: Name the VM (e.g., vMX-01), select your OS type as Linux, and Version as 6.x - 2.6 Kernel.
Do not mount an ISO. Skip the CD/DVD step.
System: Check "QEMU Agent", Machine type q35, BIOS OVMF (UEFI).
Disks: Delete the automatically created hard disk.
Go to your Proxmox node's shell, navigate to where you uploaded the file, and run: qm importdisk 101 Jinstall-vmx-14.1r4.8-domestic.img local-lvm (Replace 101 with your VM ID and local-lvm with your target storage).
Back in the GUI, go to the VM's "Hardware" tab, double-click the unused disk, and click "Add".
CPU: Set to 6 cores, Type host.
Memory: Set to 16384 MB (16 GB).
Network: Add your interfaces.
- virtio is generally supported in 14.1R4, but if you have data plane issues, change the model to e1000.
Boot the VM.

Option B: Standard Linux KVM (virsh)

Move the image to your KVM storage pool: sudo mv Jinstall-vmx-14.1r4.8-domestic.img /var/lib/libvirt/images/
Resize the image to give yourself room for logs (optional but recommended): sudo qemu-img resize Jinstall-vmx-14.1r4.8-domestic.img +20G

Create the VM via XML or virt-install:

virt-install \
  --name vMX-01 \
  --memory 16384 \
  --vcpus 6 \
  --disk path=/var/lib/libvirt/images/Jinstall-vmx-14.1r4.8-domestic.img,format=raw,bus=virtio \
  --network network=default,model=virtio \
  --network network=default,model=virtio \
  --os-variant generic \
  --graphics vnc \
  --import

Who needs this

Network engineers testing or lab-running Juniper vMX.
People doing upgrades, feature validation, or training on older Junos 14.1 branch.