Date: Wed, 29 Jan 2020 15:00:20 -0800 From: Michael Sierchio <kudzu@tenebras.com> To: "Vlad D. Markov" <dvoich@aim.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org>, Polytropon <freebsd@edvax.de> Subject: Re: Why is rufus not available under FreeBSD ? Message-ID: <CAHu1Y73JVs3sh=Hb74=FUBFY4Eg6K6u-yo-jPaqDPNHnFpMJug@mail.gmail.com> In-Reply-To: <20200129151456.a0394d3f8263158b26e92f99@aim.com> References: <DB8PR06MB64422AD5DE4E135FAF90F757F60A0@DB8PR06MB6442.eurprd06.prod.outlook.com> <d01bf19b-b616-404b-903c-6e4f1e63f941@yggdrasil.evilham.com> <20200128174759.38f5db42.freebsd@edvax.de> <DB8PR06MB64422D72513259DB4F1A4932F6050@DB8PR06MB6442.eurprd06.prod.outlook.com> <20200129043720.d90f1785.freebsd@edvax.de> <20200129151456.a0394d3f8263158b26e92f99@aim.com>
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One small inline note below...
On Wed, Jan 29, 2020 at 12:15 PM Vlad D. Markov via freebsd-questions <
freebsd-questions@freebsd.org> wrote:
For some reason I wanted a bootable dos usb in the distant past. I found
> this on my computer:
>
> #!/bin/sh
>
> # empty the disk of all data
> dd if=3D/dev/zero of=3D/dev/da0 bs=3D1m count=3D2
>
If you're going to create a gpart partition scheme to the disk, you want to
erase the beginning and end (in the case there was already gpart scheme)
BOOTSIZ=3D"128k"
DISK=3D"$1"
offset=3D`diskinfo $DISK | awk '{ print $4 - 128 }'`
dd if=3D/dev/zero of=3D/dev/$DISK bs=3D${BOOTSIZ} count=3D1
dd if=3D/dev/zero of=3D/dev/$DISK seek=3D$offset
Or the equivalent..
> # Create a master boot record on the disk
> gpart create -s MBR da0
>
> # add a 64MB slice (partition) of a type
> gpart add -s 64m -t \!6 da0 #fat16
> #gpart add -s 64m -t \!12 da0 #fat32
>
> # set the first slice (partitiion) active on dev da0
> gpart set -a active -i 1 da0
>
> # place the bootcode in the MBR
> gpart bootcode -b /boot/mbr da0
>
> # make file system nd install bootstrap code
> newfs_msdos -B /home/vlad/mkDos/bootsect -o 63 /dev/da0s1
> #newfs_msdos -F 32 -c 1 -S 512 -C 34089472 -B /home/vlad/mkDos/bootsect
> -o 63 /dev/da0s1
>
> mount_msdosfs /dev/da0s1 /mnt
> cd /mnt && touch IO.SYS MSDOS.SYS COMMAND.COM
> cp /home/vlad/mkDos/dosFiles/* /mnt
>
> umount /mnt
>
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--=20
"Well," Brahm=C4=81 said, "even after ten thousand explanations, a fool is =
no
wiser, but an intelligent person requires only two thousand five hundred."
- The Mah=C4=81bh=C4=81rata
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