I have already set up Karmic on a most recent 320 GB hard drive as well as partitioned it as follows:

Device Mount Point
/dev/sda1 /boot Primary
/dev/sda2 / Primary
/dev/sda3 /linux-swap Primary
/dev/sda4 Extended
/dev/sda5 /tmp
/dev/sda6 /var
/dev/sda7 /usr
/dev/sda8 /usr-local
/dev/sda9 /opt
/dev/sda10 /home
Unallocated 193 GiB

All partitions are Ext4.

I would like to make other partitions in the unallocated space. But, when I make new partitions (e.g. /virtual for VirtualBox image files) they always mount to /media automatically as well as show up as mountable partitions. I make out this is how it's thought to be if I was creating the partition on another drive. How can I make the new-fangled partition so that it does not mount to /media? I'm not confident if I'm phrasing the question properly. Thanks.