hi Matthias, for initrd
"This tree can then be archived into a single file using cpio or turned into a file-system image either by use of a loopback device or a small mountable device. The archive (or image file) can be compressed with gzip to further save space." so initrd can be a cpio archive thanks, mitul modi On Tue, Aug 5, 2008 at 5:35 PM, Matthias Kaehlcke <[EMAIL PROTECTED]>wrote: > El Mon, Aug 04, 2008 at 07:30:00PM -0400 Robert P. J. Day ha dit: > > > > > i started this discussion over on the embedded linux list, but it > > would seem to be more appropriate here so i'll start over, and i'll > > report back to the embedded list what the results are. > > > > in short, i want to know if it's possible to separate the config > > selections of INITRD and INITRAMFS so you can choose them > > independently. more specifically, i want to know if one can select > > (internal) INITRAMFS support without having to select (external) > > INITRD support, since many embedded systems find it handy to boot from > > that internal initramfs image, but may have no need whatsoever to > > support an external (what we've known historically as) initrd image. > > and leaving out initrd support looks like it might save some bytes. > > with me so far? > > > > just to clarify the terminology, an "initrd" image would be an > > independent cpio-format image that you'd pass via, for example, grub, > > as in: > > > > title Fedora (2.6.25.11-97.fc9.i686) > > root (hd0,0) > > kernel /vmlinuz-2.6.25.11-97.fc9.i686 ... etc etc ... > > initrd /initrd-2.6.25.11-97.fc9.i686.img <--- that > > can an initrd image really have cpio format? i thought the image must > always be based on a "real" file system. > > > while "initramfs" refers, of course, to the internal cpio-format image > > that you can build directly into the kernel image (see the contents of > > the top-level usr/ directory in the kernel source tree for the code > > that does that). > > for me an initramfs is an cpio format image, but not containing > necessarily the kernel, it can be also passed to the kernel as a > parameter like an initrd > > -- > Matthias Kaehlcke > Embedded Linux Engineer > Barcelona > > You can chain me, you can torture me, you can even > destroy this body, but you will never imprison my mind > (Mahatma Gandhi) > .''`. > using free software / Debian GNU/Linux | http://debian.org : :' : > `. `'` > gpg --keyserver pgp.mit.edu --recv-keys 47D8E5D4 `- > > -- > To unsubscribe from this list: send an email with > "unsubscribe kernelnewbies" to [EMAIL PROTECTED] > Please read the FAQ at http://kernelnewbies.org/FAQ > >
