Aaah,
wwt FIND -a find on the other HDD /dev/sdb2
replugging the real destination HDD and
wwt FORMAT -s 365 --sector-size 1024 -f /dev/sdb2
results in
***** wwt: Wiimms WBFS Tool v0.19b r493 cygwin - Dirk Clemens - 2009-11-28 ***
**
FORMAT BLOCK DEVICE /dev/sdb2 [366 GiB, sector size 1024]...