Date: Sun, 14 Jun 2009 14:28:52 -0500 From: "Doug Poland" <doug@polands.org> To: questions@freebsd.org Subject: Bootable GPT USB device Message-ID: <defb156a86325bb5b20ea314e05cd1f0.squirrel@email.polands.org>
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Hello,
I'm trying to create a bootable USB drive using the new GEOM_PART_
partitioning technology. Following gpart(8), I've done this...
gpart create -s GPT da0
gpart bootcode -b /boot/pmbr da0
gpart add -b 34 -s 128 -t freebsd-boot da0
gpart bootcode -p /boot/gptboot -i 1 da0
gpart add -b 162 -s 2097152 -t freebsd-ufs da0
gpart add -b 2097314 -s 8388608 -t freebsd-swap da0
gpart add -b 10485922 -s 2097152 -t freebsd-ufs da0
gpart add -b 12583074 -s 8388608 -t freebsd-ufs da0
gpart add -b 20971682 -s 135329773 -t freebsd-ufs da0
# gpart show
=> 34 156301421 da0 GPT (75G)
34 128 1 freebsd-boot (64K)
162 2097152 2 freebsd-ufs (1.0G)
2097314 8388608 3 freebsd-swap (4.0G)
10485922 2097152 4 freebsd-ufs (1.0G)
12583074 8388608 5 freebsd-ufs (4.0G)
20971682 135329773 6 freebsd-ufs (65G)
newfs -L boot /dev/da0p2
newfs -L swap /dev/da0p3
newfs -UL tmp /dev/da0p4
newfs -UL var /dev/da0p5
gjournal load
gjournal label /dev/da0p6
newfs -L usrgj /dev/da0p6.journal
mkdir -p /mnt/{boot,var,tmp,usr}
mount /dev/ufs/boot /mnt/boot/
mount /dev/ufs/tmp /mnt/tmp
mount /dev/ufs/var /mnt/var/
mount -o async /dev/ufs/usrgj /mnt/usr/
cd /mnt/boot && dump -0aLuC32 -f- / | restore -rf-
cd /mnt/tmp && dump -0aLuC32 -f- /tmp | restore -rf-
cd /mnt/var && dump -0aLuC32 -f- /var | restore -rf-
cd /mnt/usr && dump -0aLuC32 -f- /usr | restore -rf-
I've tried this on two systems now, 7.1-RELEASE i386 and 7.2-STABLE
amd64. In each case, I cannot boot from the newly create USB drive.
I know each machine is capable of USB boot as I have a 4GB thumbdrive
created with the traditional bsdlabel partitioning tools. Each box
boots nicely off that USB disk.
So, question is, what am I doing wrong? And, how can use the new disk
partitioning GEOM class to create a bootable, external, USB drive?
Many thanks in advance.
--
Regards,
Doug
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