Some fat PS2s have a horrible problem with getting a good grip on some discs.
Originally Posted by Whipper
Stick some tape onto the inner hub (The transparent part near the disc's spindle hole) of those discs, and keep adding tape around that hub until the PS2 does not make that scrapping sound.
And you must use good quality discs with FAT PS2s, or risk getting their lasers worn out (If you are lucky, those discs will just not be read).
FYI 150 views is not a lot.
Unmodified SCPH-77006 with SM 3.6
SCPH-39006 with M-chip modchip, SCPH-10281 NA and refurb Seagate 80GB HDD
SCPH-10000 v1.00 with SCPH-10190 PCMCIA NA and SCPH-20400 HDD unit