Re: [Qemu-devel] diskimage HOWTO

["Richard W.M. Jones" <rjones@redhat.com>]

On Mon, Aug 24, 2009 at 01:39:53PM +0800, Bai Shuwei wrote:
> Hi, All:
>   I want to build a test enviroment with QEMU and buildroot. But I don't
> know how to build the diskimage which same as linux-0.2.img offered by
> BUILD-ROOT. I build the diskimage following the
>    buildroot-2009.05/docs/README.diskimage<http://192.168.1.102/crosscopile/buildroot-2009.05/docs/README.diskimage>,
> but failure.
> 
>    The bellow is my process.
> 
>    # dd if=/dev/zero of=img bs=4096 count=16384
>    # echo -e "n\np\n1\n\nw\n" | fdisk -C 16065 -H 255 -S 63 ./img
>    # losetup -o 512 /dev/loop0 img
>    # mkfs.ext2 -m0 -Lslash /dev/loop0
>    # mount -oloop,rw /dev/loop0 fs/

You may find that libguestfs is better for this sort of thing.  It
doesn't need you to be root for a start.

You'd do something like:

$ guestfish <<EOF
alloc img 64M
run
sfdiskM /dev/sda ,
mkfs ext2 /dev/sda1
EOF

Rich.

-- 
Richard Jones, Emerging Technologies, Red Hat  http://et.redhat.com/~rjones
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