If you have purchased the VM-1000-HV license and are
deploying the VM-Series firewall in standalone mode on a VMware
ESXi server, you must allocate the minimum memory your VM-Series
model requires.
To avoid booting in maintenance mode, you must either modify
the base image file (see How
do I modify the base image file for the VM-1000-HV license?),
or, edit the settings on the ESXi host or the vCenter server before
you power on the VM-Series firewall.
Also, verify that the interface is VMXnet3. Setting the interface
type to any other format causes the firewall to boot into maintenance
mode.