Cracked PS1 game? You mean those anti-mod games or those with LibCrypt?
Both can be handled like any other PS1 game. A good modchip – like the already mentioned PsNee – will not trip anti-mod and CDs read with RAW+Sub96 and burned with RAW-DAO+Sub96 will satisfy LibCrypt.
Tonyhax International can take care of those two roadblocks as well.
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Methods for starting burned discs:
- Modchip → Install once and all CD-Rs and originals from all regions will work
- PS-X-Change swap disc
- Cheat device. Only for consoles with parallel connector. Not possible on small model PsOne
- FreePSXBoot memory card exploit
- Savegame exploits
- Swap tricks
- Very early SCPH-100x with CD player
- Hot swapping spinning disc multiple times during load ← (Please don't!)