Date: Wed, 21 Aug 1996 11:19:26 -0400 From: dennis@etinc.com (Dennis) To: Bill Paul <wpaul@skynet.ctr.columbia.edu> Cc: hackers@freebsd.org Subject: Re: Making Bootable Disks Message-ID: <199608211519.LAA13504@etinc.com>
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>Of all the gin joints in all the towns in all the world, Joe Greco had >to walk into mine and say: > >> > As Dennis wrote: >> > > >> > > Is it outlined/described anywhere how to make a bootable system floppy? >> > >> > disklabel -Brw fd0 >> > newfs ... /dev/rfd0a (look into /etc/disktab for the options) >> > mount /dev/fd0a /mnt >> > cp /kernel /mnt >> > umount /mnt >> >> With all due respect Joerg, that's nice but not very useful :-) The kernel >> alone will take 2/3 the floppy. > >If you're willing to blow the money on a second floppy, you can make >a two floppy set (boot and root disks). The system has to boot without human intervention..... > >Create two disks with UFS filesystems on them, put the kernel on one >and /sbin/init and whatever else you can manage onto the other one >(crunchgen would be useful if you can't fit all the tools you want). > >Compile the kernel with: > >config vmunix swap generic > >instead of > >config vmunix root on wd0 (or whatever you normally use). > >(Yes, I know it's shown as 'config kernel ...' in the standard >config files. I don't care about any damn trademarks: god intented >the kernel image to be called vmunix and that's what I'm bleeding >well going to call it. So there.) Sounds like a man with little to lose :-) > >To use this, put the kernel floppy in the drive, start the system, and >use the -a option at the boot prompt: > >Boot: -a > >The kernel will load, go all the way through the autoconfig phase >and then present you with a prompt that says: > >root device? > >When this prompt comes up, remove the kernel floppy, put in the root >floppy, then type 'fd0' as the root device: Can this be done automagically on a dual floppy system...if you cant squeeze it into 1? Dennis ---------------------------------------------------------------------------- Emerging Technologies, Inc. http://www.etinc.com Synchronous Communications Cards and Routers For Discriminating Tastes. 56k to T1 and beyond. Frame Relay, PPP, HDLC, and X.25 for BSD/OS, FreeBSD and LINUX
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