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Ghost boots through Limine into an x86-64 ELF kernel. The kernel entry point is kernelMain; Limine supplies a framebuffer, physical memory map, four-level page tables, the RSDP and boot modules.

The required higher-half direct-map offset is 0xffff800000000000. Kernel initialization sets up memory, interrupts and scheduling before starting the userspace services.

Root filesystem

  • Live ISO: Limine loads /boot/ramdisk, which contains the system files.

  • Installed disk: root=fat:XXXXXXXX:YYYYYYYY identifies the MBR disk signature and the FAT volume’s starting LBA as eight hexadecimal digits each. Limine loads individual bootstrap services/libraries; FAT mounts that volume as /. The older disk-only selector remains accepted. An explicit LBA allows partition 2 or 3 to supply the root independently of other FAT mounts.

Installed boots do not require a ramdisk file. The boot configuration and bootstrap module list are generated from the installed files.