On Tue, Oct 4, 2011 at 2:24 PM, Grant Edwards <grant.b.edwa...@gmail.com> wrote: > On 2011-10-04, Canek Pel??ez Vald??s <can...@gmail.com> wrote: > >> Then any boot loader will need to call something to start it. >> Understand this: any Linux/Unix init system (systemd, SysV, Upstart, >> OpenRC) is simply a program... that the Linux kernel itself executes. > > I know. What I don't understand is the statement that grub2 calls (or > connects to) the init system. > >> That's the init= command line in the kernel. >> >> The bootloader calls an operating system. The init system (if at all) >> that the OS uses doesn't matter: so if you have an operating system, >> any bootloader should be able to boot it (bearing things like being >> able to understand the filesystem etc.) > > I know how bootloaders like LILO and grub-legacy work. What I don't > understand is the statement that grub2 is somehow aware of the booted > OS's init system.
Oh. The configuration file of GRUB2 is autogenerated, and this means that the init=systemd has to be passed to the kernel line. In that sense, GRUB2 is "aware" of it. Regards. -- Canek Peláez Valdés Posgrado en Ciencia e Ingeniería de la Computación Universidad Nacional Autónoma de México
