Date: Fri, 8 Jan 1999 23:17:44 +0200 (SAT) From: Robert Nordier <rnordier@nordier.com> To: mike@smith.net.au (Mike Smith) Cc: rnordier@nordier.com, abial@nask.pl, jkh@zippy.cdrom.com, dillon@apollo.backplane.com, mike@smith.net.au, andreas@klemm.gtn.com, current@FreeBSD.ORG Subject: Re: can't boot from CD and floppy after make release Message-ID: <199901082117.XAA00229@ceia.nordier.com> In-Reply-To: <199901081608.IAA02956@dingo.cdrom.com> from Mike Smith at "Jan 8, 99 08:08:38 am"
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Mike Smith wrote:
> > > Bear in mind, though, that you'll need additional 100kB of place on the
> > > floppy (that's approx. the difference between kzip stubs and the
> > > /boot/loader).
> > >
> > > In this light it makes sense to do what rnordier suggested - namely, to
> > > write a small BTX application which would only be able to load kernel.gz.
> > > I _may_ embark on such a project if I have some docs about how to use BTX.
> >
> > If it's likely to be used, I don't mind writing this. It might make a
> > good example application for the BTX docs I'm trying to write.
>
> It'd definitely be useful for the PicoBSD people, and anyone else that
> didn't need the loader's functionality. I'd also be interested in
> knowing if you have any compression/decompression tools suitable for
> use with BTX eg. to compress the application data/expand it when BTX
> relocates.
I quite like Jordan's suggestion of kzip'ing the loader. The
compression is not especially efficient:
-r-xr-xr-x 1 rnordier wheel 122880 Jan 3 23:55 loader
-rwxr-xr-x 1 rnordier wheel 70760 Jan 8 23:05 loader.kz
but boot1/boot2 don't have a problem with loader.kz.
But maybe this isn't the compression you had in mind (I'm assuming
"when BTX relocates" refers to what the btxldr code does when
unpacking the composite /boot/loader object before invoking the
BTX kernel).
--
Robert Nordier
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