Tip: If you want to truly back up everything, you must back up the main save file (via PS+ or full backup) and manually copy your replay/photo files to USB (these are not protected).
Before you touch anything, you must understand the difference between these two folders on your PS3 XMB: gran turismo 6 save data ps3
PS3s are now over a decade old. Mechanical hard drives fail. If your YLOD (Yellow Light of Death) strikes, your 500-hour GT6 career is gone unless you backed up the protected save properly. Tip: If you want to truly back up
For a complete move between two systems, connect them via Ethernet and use the Data Transfer Utility in System Settings. Fixing Corruption and Update Errors gran turismo 6 save data ps3