I have got Ubuntu 12.04 alongside Windows 7 on Dell Inspiron mini 160 GB. The size of Ubuntu is not sufficient now. Can I redraw partition size when upgrading to Ubuntu 12.10, as I find myself not able to understand GParted.
Yes, You can resize the partition in the installation process. You have to select something else option in the partitioning phase. But, This can be sometimes tricky and I recommend using Gparted in the Live session.
If you are referring to resizing the partition while doing upgrade (using update-manager), you cannot. You cannot resize, delete or otherwise change the partition while using it (the partition is mounted at
If you want to upgrade with update-manager
If you want resizing of the existing partition, and also do not want to do a fresh installation, You can use the Live session. Take note that, you must have free space after the Ubuntu partition or create free space
Boot to a Live Ubuntu system.
Open gparted by typing "Gparted" in the dash
Select the next partition just after the Ubuntu, Select resize and move the slider from left to right to make some space just after the Ubuntu installation. Then click on Apply button. This might take some times, so take precaution for power/battery down.
After you created free space, select the existing Ubuntu partition, then right-click → Resize and move the slider from the right end to fill all the gray free space area. Then click on Apply button.
Now, exit the Live session, boot to your Ubuntu installation and perform upgrade from it.
This method might not work, if your Ubuntu is a primary partition and the partition immediately following is an extended/logical partition. (This might be possible also, but I haven't tested it).
In that case , upgrading wont help you, you need to make a fresh installation of ubuntu alongside your existing windows, and while installation, you need to specify partition.
I suggest have a look at gparted once again : http://www.dedoimedo.com/computers/gparted.html