Extracting root filesystem on SD card

[fredit]

Dear,

I'm trying to install arch on my sdcard.

But when I'm extracting the rootfilesystem and I put in a command for extracting the system, I got this message:

bsdtar -xpf ArchLinuxARM-rpi-2-latest.tar.gz -C rootbsdtar: could not chdir to 'root'

Does somebody know how I solve this?

Kind Regards,
Fredit