I Found 2 PlayStation 2 PAL Demo Discs, they boot up but the startup screen is corrupted, i should dump them? Official PS2 Magazine Demo 1 Games (2000) : 2004 Disc:
The Disc is scratched, but only the PlayStation 2 logo during startup is corrupted, everything else is fine, but some videos on the disc aren't working, i need to test on My Real PS2, che screenshot are from my Windows 10 PC
First rule, dump it as it. Set the the read retry very high. Then clean it a bit, do it again. Lastly, polish it and try again. If you polish it, you need to protect the top so it doesn't damage. Last time I did this I mounted the disc label side down using a plastic retainer through the hole and buffed it carefully with polishing compound. You don't want the disc to spin at all.
If you're running PAL discs on NTSC consoles or the opposite, you will *ALWAYS* get a corrupted "PlayStation 2" logo. The logo for PAL consoles are in a different resolution. Edit: Screw modchips.