Disclaimer: This article does not condone piracy. The following is for educational reference regarding portable software behavior.
If you need something lightweight and free, try Photopea (browser-based) or GIMP . They offer modern toolsets without the 20-year-old compatibility headaches. CS2 on Windows 11 [CS2 IS DEAD] - Adobe Community adobe photoshop cs2 portable
If you have old discs and are looking for a safe crack to make your legal copy portable, or if you are simply curious, watch for these red flags: Disclaimer: This article does not condone piracy