Date: Mon, 15 Jun 2009 21:29:37 +0930 From: "Daniel O'Connor" <doconnor@gsoft.com.au> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-hackers@freebsd.org Subject: Re: Booting from FAT(32) Message-ID: <200906152129.44454.doconnor@gsoft.com.au> In-Reply-To: <200906141410.14771.doconnor@gsoft.com.au> References: <200906140015.44560.doconnor@gsoft.com.au> <200906141034.01890.doconnor@gsoft.com.au> <200906141410.14771.doconnor@gsoft.com.au>
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From: "Daniel O'Connor" <doconnor@gsoft.com.au>
To: Adrian Chadd <adrian@freebsd.org>
Subject: Re: Booting from FAT(32)
Date: Mon, 15 Jun 2009 21:29:37 +0930
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Cc: freebsd-hackers@freebsd.org
References: <200906140015.44560.doconnor@gsoft.com.au>
<200906141034.01890.doconnor@gsoft.com.au>
<200906141410.14771.doconnor@gsoft.com.au>
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On Sun, 14 Jun 2009, Daniel O'Connor wrote:
> On Sun, 14 Jun 2009, Daniel O'Connor wrote:
> > > I've been meaning to trial it out actually. It sure would be
> > > interesting to boot a kernel/mfs off of a DOS bootable FAT USB.
> >
> > I think you can do it if you makefs /boot and feed it to syslinux
> > using memdisk (I plan on trying this today).
>
> I used Luigi's iso2flash.sh script (the guts thereof) and it worked
> fine, ie.. mkdir /tmp/boot
> cp -r /boot /tmp/boot
> [ fixup /tmp/boot/boot how you like ]
> makefs -t ffs -o bsize=3D4096 -o fsize=3D512 -f 50 /tmp/boot.img
> /tmp/boot bsdlabel -Bw -f /tmp/boot.img auto
> bsdlabel -f /tmp/boot.img | sed -e '/ c:/{p;s/c:/a:/;}' | bsdlabel
> -R -f /tmp/boot.img /dev/stdin gzip /tmp/boot.img
If anyone is interested the attached script will format a USB flash=20
drive, and create the necessary magic to boot off.
I think this would be a useful addition to the 'make release' stuff -=20
you can run the script with a install CD directory made by make release=20
and it will give you a USB stick you can install from (you also need to=20
copy the dist files :)
I think it would be good to include the image on prebuilt ISOs so you=20
can then get users to use something like unetbootin in Windows to copy=20
the ISO bits onto a USB key. It requires an extra 15Mb of space, not=20
sure if that's a big deal on a CD (should definitely not be on a DVD)
The script needs makefs which is in head but not 7.x (easy to build=20
there though). It also needs the sysutils/syslinux port installed.
--=20
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
-- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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