I thought I'd do a quick follow up to my last video in response to a question in the comments, about how to run ps1 backups. if you have all the same things as that video you don't even need to use cogswap, FMCB and ulaunchelf or wlaunchelf, are enough. You also need to block the tray opening sensors on a slim (you can find tutorials on youtube), or a slide tool for a fat ps2. finally you need an original game, but it can be any game it just needs to pass the region check.
In case reading is easier:
Start the Ps2 with the original ps1 disc in
Back out of the browser window and open ulaunchelf
Change to the backup disc without triggering the open tray sensors
In ulaunchelf go to File Manager - Misc - PS2Disc