To understand why was such a big deal, we have to rewind to 2013. Sony’s PlayStation 3 had long been considered a fortress. The infamous "Other OS" feature was gone, and firmware updates (especially 3.55 and later 3.56+) had plugged major security holes.
That text string — — appears to refer to: godofwarascensionps3duplex
Since PS3’s internal HDD and external USB drives formatted FAT32 have a 4GB file limit, Duplex split large .psarc archives (some exceeding 6GB) into .66600 , .66601 , etc. These are reconstructed by backup managers. To understand why was such a big deal,
Leo tried to eject the disc. The button clicked uselessly. He yanked the power cord. The PS3 stayed on, its light now a deep, sickly orange. That text string — — appears to refer
: While the base file is ~34 GB, standard installations often require up to 80 GB of free space on the internal hard drive during the initial unpacking and installation process.