I started to receive "Low Disk Space" message on my Ubuntu Oneiric 11.04 few days ago.
With GParted I see that my /dev/sda1 where is system is only 1,17 Gb! and this is obviously not enough. I have 3 more (needed) partitions with enough space and about 28 Gb of unalocated disk space on this phisical disk.
Now I can't turn on terminal with root privileges "Failed to run /usr/bin/x-terminal-emulator as user root." anymore because linux is "Unable to copy the user's Xauthorization file".

Question is: Can I increase my /dev/sda1 by adding this unallocated space and how to do this?
Preffered with GParted if possible.
I try to do this by myself but unsuccessfuly. This partition is of ntfs type and here is also system files for windows booting what I choose with grub at startup.

I am not linux guru so please explanation on "simple way".

Edit

The output of df -T is:

Filesystem    Type   1K-blocks      Used Available Use% Mounted on

/dev/sda7     ext4   113036984 107296076         0 100% /

udev      devtmpfs     1987968         4   1987964   1% /dev

tmpfs        tmpfs      798356      1184    797172   1% /run

none         tmpfs        5120         0      5120   0% /run/lock

none         tmpfs     1995888      3736   1992152   1% /run/shm

/dev/sda3  fuseblk    16383996   9103384   7280612  56% /media/sda3

/dev/sdc1     vfat   312492320  49250336 263241984  16% /media/usb0

Additionally, this thead is not duplicate of any other thread in ask ubuntu!

Sorry, I am new here and dont know with this forum yet!

I emptyed trash already!
Then get some more access to my root... thank you!

But I see GParted LiveCD is for x86 machines.
Forgot to say I use 64bit machine and OS.
Is this OK for me?

Sure, I get useful and nice answers here and I will vote as soon I register.
Someone put me here automatically from "stack-overflow" and I am forbidden to give votes unregistered. Sorry.