# Boot Process with OpenCore Legacy Patcher OpenCore Legacy Patcher itself is actually quite a "dumb" program. It essentially edits a config.plist file and moves files around, actually having little logic regarding the boot process. The real magic of OCLP is [OpenCorePkg](https://github.com/acidanthera/OpenCorePkg), our back-end, and what makes this patcher so powerful. ## Boot Process with OpenCore To understand a bit more of how OpenCore is able to revive older Macs in such a native-like way, we need to go over *how* OpenCore works with your Mac: ![](./images/oc-explained.png)