On Mon, 28 Jan 2013 06:10:36 +0800, horseriver said: > On Mon, Jan 28, 2013 at 12:05:35PM +0530, Mandeep Sandhu wrote: > > On Mon, Jan 28, 2013 at 2:07 AM, horseriver <horseriv...@gmail.com> wrote: > > > hi:) > > > > > > Is /boot/initrd.img a root filesystem? what is the filetype of it? > > > > Yes, it's a rootfs with minimal stuff needed for booting a workable > > system. why does this matter. doing 'file /boot/initrd.img....' on my > > system shows its a gzip compressed file. > > > > > > > > Can I put initrd.img in a floppy to boot system ? > > > > I think you can. Provided you have the floppy driver compiled into your > > kernel.
And assuming the initrd fits on a floppy (which is actually unlikely - even without any kernel modules on it, the initrd to get LVM launched comes in at around 8M. A default Fedora initramfs is closer to 20M. Good luck fitting that on a floppy :) Of course, an initrd on floppy is kind of silly, because you still need to find someplace else to fit the actual kernel - which hasn't fit on a floppy for quite some time. > Thanks! > > Does this /boot/initrd.img file come out when building kernel ? > how to build it? Your system should have either 'mkinitrd' or 'dracut' to build the initrd image. Some older systems will have 'mkinitramfs'.
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