Check your /etc/mtab file. Looks like you somehow already have a record for /home2 /dev/hdd1 there. >[root aa2 ~]# mount /home2 >mount: /dev/hdd1 already mounted or /home2 busy >[root aa2 ~]# mount /dev/hdd1 >mount: /dev/hdd1 already mounted or /home2 busy >[root aa2 ~]# umount /dev/hdd1 >umount: /dev/hdd1: not mounted >root aa2 ~]#