How to reallocate space in ubuntu8.10

In ubuntu8.10, how to reallocate the space-Linux general technology-Linux technology and application information is described below. As shown below, I want to allocate/dev/sda10 space to/dev/sda7 for more points. How can I do this? Thank you.

CODE: Filesystem Size Used Avail Use % Mounted on /Dev/sda7 3.0G 2.9G 0 100%/ Tmpfs 501 M 0 501 M 0%/lib/init/rw Varrun 501 M 108 K 501 M 1%/var/run Varlock 501 M 0 501 M 0%/var/lock Udev 501 M 2.8 M 498 M 1%/dev Tmpfs 501 M 232 K 501 M 1%/dev/shm Lrm 501 M 2.0 M 499 M 1%/lib/modules/2.6.27-7-generic/volatile Overflow 1.0 M 32 K 992 K 4%/tmp /Dev/sda10 15G 1.2G 13G 9%/media/disk Hello @ hello-desktop :~ $