The "Portable" aspect became highly desirable because technicians wanted to carry a "swiss army knife" of repair tools on a flash drive. They didn't want to install software on a client's machine; they just wanted to boot, clone, and leave.
by Symantec in 2013. The "portable" versions found online today are typically unofficial modifications of the legacy software or components of the Symantec Ghost Solution Suite designed for enterprise use. Key Features of Legacy Norton Ghost Download Norton Ghost Portable
Boot the target PC from the USB drive. Launch a command prompt or file explorer within the PE environment, navigate to the USB, and execute ghost32.exe . This is the closest you will get to a “portable” version. they just wanted to boot