meelis
Something like this should fix it
login as root or su user
cd /mnt/dar2/test
and make sure you are still not connected to the remote mounted drive
eg run
mc
Then unmount it
umount /mnt/dar2/test
then use mc to delete or do
rm /mnt/dar2/test
Warning if you are still connected and you try to delete the mounted drive, you can delete all files on the external drive/share.