The output for mount | grep /dev/sd is
/dev/sdb6 on /mnt/sdb6 type ext4 (rw,relatime,barrier=1,data=ordered)
/dev/sdb6 on /home type ext4 (rw,relatime,barrier=1,data=ordered)
/dev/sdb2 on /mnt/sdb2 type ext4 (rw,relatime,barrier=1,data=ordered)
/dev/sdb2 on /opt type ext4 (rw,relatime,barrier=1,data=ordered)
I remove the line opt from .filetools and change my bootlocal.sh a little bit. then I remove my backup so it wouldn't restore. So the solution from gerald_clark works!
But my Xorg configuration is lost. Do I have to use bootcode for etc too ?
Or I just could move the TC directories to a new partition and let see if this problem is solved automatically.
Thanks you guys so much !!!