cd /tmp
wget http://build.shr-project.org/shr-testing/images/om-gta02/full-om-gta02.tar.gz
#start downloading
fdisk -l #to find the device name, refered as /dev/sdX
mount #make sure, it is unmounted (automount?)
fdisk /dev/sdX
help # show help
p # show me the partition table of this device! Is this my HDD or my backup USB stick?
d # delete
q # quit if /dev/sdX is wrong
n # new partition
p # everything ok?
w # write to disk
fdisk -l
/dev/sdX1 1 1020 7968239+ 83 Linux
mke2fs -j /dev/sdX1
mount /dev/sdX1 /mnt/
cd /mnt
tar -xvpzf /tmp/full-om-gta02.tar.gz
cd
umount /mnt