i just did level 1 dump to tape and (just to see) tested if it works doing
/sbin/restore -ivf /dev/rst0

and i've got:

Verify tape and initialize maps
Tape block size is 32
Dump   date: Mon Sep 16 22:54:41 2002
Dumped from: Sun Sep 15 18:35:50 2002
Level 1 dump of / on chylonia.3miasto.net:/dev/rwd0a
Label: wojtek
Extract directories from tape
. is not on the tape
Root directory is not on tape
abort? [yn] n



what's wrong?