fsck -b 32 no updating Standard Superblock

[Tilman Linneweh]

Hi,

I managed to trash my superblocks. When I try fsck -b 32 everything goes well,
but the original superblock is not updated:

sauna# fsck /dev/ad0s1e
** /dev/ad0s1e
Cannot find file system superblock

LOOK FOR ALTERNATE SUPERBLOCKS? [yn] y

USING ALTERNATE SUPERBLOCK AT 32
** Last Mounted on 
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
** Phase 5 - Check Cyl groups
96 files, 188 used, 128811 free (75 frags, 16092 blocks, 0.1% fragmentation)
sauna#

According to Google there should be a Question

UPDATE STANDARD SUPERBLOCK? [yn]

but there isn't. what is going wrong?

regards
tilman