> Hello > > I have an main disk (operating system) and an spare disk for backup. > Is it possible with rsync command to copy whole disk n1 to disk2? > > Like: #rsync -av /dev/sd0 /dev/sd1 It will not copy open files. I use dd if=/dev/sd0 of=/dev/sd1 bs=1024k e2label /dev/sd1 /backup Much better and safer. Read this: http://www.crazytrain.com/dd.html