Make sure that you have a good backup of your important Ubuntu files, as this procedure can corrupt or loose data.

The use of an extended partition (sda3) makes this a little difficult. I'll outline the easiest way first, and we can add more to the procedure if we have to.

Keep these things in mind:

• a move is done by pointing the mouse pointer at the center of a partition and dragging it left/right with the hand cursor

• a resize is done by dragging the left/right side of a partition to the left/right with the directional arrow cursor

• if any partition can't be moved/resized graphically, you may have to manually enter the specific required numeric data (don't do this unless I instruct you to)

• you begin any move/resize by right-clicking on the partition in the lower part of the main window, and selecting the desired action from the popup menu, then finishing that action in the new move/resize window

Do the following...

Note: if the procedure doesn't work exactly as I outline, STOP immediately and DO NOT continue.

• boot the a Ubuntu Live DVD/USB

• start gparted or run the following command to open gparted:

  sudo -i gparted &
  

Step #1

• right-click on sda5 and select swapoff
• right-click on sda3 and select resize
• resize the left side of sda3 all the way to the left
  • it may be difficult to grab the left side of sda3, if so, STOP here
• you'll see that the unallocated space is now used by sda3
• close the move/resize window
• click the Apply icon

Step #2

• right-click on sda5 and select swapoff (already done in Step #1)
• right-click on sda5 and select move
• note (write down) the numeric partition size before the move
• move sda5 all the way to the left (inside of sda3)
  • be carefull not to resize sda5. If you do, cancel and start Step #2 again
• close the move/resize window
• click the Apply icon

Step #3

• right-click on sda6 and select resize
• resize the left side of sda6 all the way to the left
• close the move/resize window
• click the Apply icon
• this may take a while so be patient
• right-click on sda5 and select swapon

Now quit gparted and reboot your computer, being sure to remove the USB flash pen at the appropriate time.

The Ubuntu partition sda5 is a secondary partition to the primary partition sda4 so you can't resize sda5 beyond the size of sda4

To resize the Ubuntu partition, you must first resize sda4 by extending it into the free space you have created. Then the next step is to extend sda5 to use up the extra spaces in sda4. You can do this in gparted and apply the change in one go.

Here are the steps:

1. Move the sda3 partition so that the free space is after sda3 (not before it like it is shown now).
2. Resize sda4 into the free space before it (by extending sda4). Be sure not to select sda5 by mistake as it is just an outline surrounding sda5.
3. Lastly, resize sda5 to fill up the larger sda4 partition you have created.
4. Now, apply the changes.

Good luck.

PS: Should backup important stuff in case things go wrong.