grub: initrd

 
 16.3.34 initrd
 --------------
 
  -- Command: initrd file [file ...]
      Load, in order, all initial ramdisks for a Linux kernel image, and
      set the appropriate parameters in the Linux setup area in memory.
      This may only be used after the 'linux' command (⇒linux) has
      been run.  See also ⇒GNU/Linux.