I trying to install a hdd on my asus

this is what comes up
[admin@WL-001E8C6C8F08 root]$ df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/root 3072 3072 0 100% /
/dev/discs/disc0/part1 976760000 95800 976664200 0% /tmp/mnt/disc0_1



I should have been:
[admin@blechbuechse root]$ df
Filesystem 1k-blocks Used Available Use% Mounted on
/dev/root 3008 3008 0 100% /
/dev/discs/disc0/part1 75398848 683812 70884940 1% /tmp/harddisk[admin@blechbuechse root]$
The problem is that it says tmp/mnt/disc0 ´and it should say tmp/harddisk