This is an old revision of the document!

Boot parameters

/syslinux/isolinux.cfg when booting from CD on a MBR machine
/syslinux/syslinux.cfg when booting from USB flash drive on a MBR machine
/boot/grub/grub.cfg when booting from a uEFI machine
/tftpboot/pxelinux.cfg/default or similar on PXE server, when booting from PXE on a MBR machine
/tftpboot/grub/grub.cfg or similar on PXE server, when booting from a uEFI netboot machine

Alma wiki