Rsync added new folders after copy?

Hi guys,

Don't really know much about unix or anything, just starting to mess around a little bit to have more understanding in general.

So, I tried using rsync to copy my macbook pro backup/clone from an external drive I have to another external drive. I ended up using...

"

sudo rsync -a source destination

"

Entered my password, then let it do it's thing. But, when it finished, for some reason it added roughly 6GB worth of new files and folders.

The folders it added are...

etc
temp
var
bin
dev
home
private
sbin
usr
Volumes

Can anyone explain why these are added / can I remove them? Any help appreciated, thanks!

It looks like your 'source' was root. Those are all system files. You can simply delete them from the 'destination' but be 100% certain you're really on the destination and not deleting your system, it happens.