To get your interfaces (ge-0/0/x) to show up, ensure your Qemu settings are configured as follows:

To understand the "repack," one must first understand the dual-VM architecture of the vMX. The jinstall package is not a single bootable OS, but a container for two separate operating environments.

Technical Report: Analysis of jinstall-vmx-14.1R4.8-domestic-img Repack