bin\tar --group=1 -H ustar -c recovery.img > recovery.tar
bin\tar -H ustar -c recovery.img > recovery.tar
bin\tar -cf recovery.tar recovery.img
I had the same error that several others had when trying this out (out of gid_t range). I fixed it by editing Runme.bat and adding --group=1 to the tar line so that it looks like this:
Code:bin\tar --group=1 -H ustar -c recovery.img > recovery.tar
Great tool, once editing this it did exactly what I needed! Thanks!