Jarry writes: > I want to backup my whole hard-drive (8 partitions) with: > # dd if=/dev/sda | gzip > /path/image.gz > > In order to achieve good compression level I'd like to wipe > out all empty space with zeros. How can I do that?
You can create files containing only zeros on all partitions until
they are full. Like this:
for i in 5 6 7 8 9 10 11 12
do
mount /dev/sda$i /mnt
dd if=/dev/zero of=/mnt/zero
rm /mnt/zero
umount /mnt
done
Wonko
