I'm installing Ubuntu (or Xubuntu/Lubuntu/Kubuntu) alongside Windows 7/XP. I got to the screen that says, "Allocate drive space by dragging the slider below." On the following screen, I'm not sure whether the right side or the left side is for Ubuntu or for Windows. Which side is which?

Screenshot for Ubuntu: (see here for Lubuntu)

enter image description here


5 Answers 5


Your existing partition (Windows) is on the left, Ubuntu is on the right. That's the standard order when shrinking one partition to create another for dual-booting.

  • For Ubuntu, it's like this:

    enter image description here

  • For Lubuntu, like this:

    enter image description here

Here is the bug report:

  • 1
    Normally on the Ubuntu installer it shows the Ubuntu icon on the Ubuntu side, so this looks like a bug with Lubuntu.
    – psusi
    Jun 14, 2012 at 0:52
  • Actually, every other time I installed Lubuntu it has showed an icon and text in each of the sliders. This was the first time it did this, so it may be something with this specific computer or hard drive.
    – Kerrick
    Jun 14, 2012 at 15:19
  • 2
    I recently had the same on an Ubuntu installation, so it's not confined to Lubuntu. Aug 24, 2012 at 17:53
  • @ChrisCarter: thanks, I saw a recent question with the same problem on Ubuntu too, editing question/answer to make it more generalized.
    – ish
    Aug 24, 2012 at 17:59

It is on the right hand side. Yes, Ubuntu is on the right hand side of the slider. See the below picture.

enter image description here

I wanted to see this by doing a needless actual install, And also wanted to take a screenshot, with Alt key pressing, To my surprise, As soon as I press ALT, It revealed the actual partition of Ubuntu !!


If Windows was installed previously, it will typically be located in the beginning of the partition; meaning it will be the first, left-most part of the bar.

Caution: this might not be your case. A screenshot or diagram of some kind would be helpful.

//After selecting "install along side windows 7" and you enter the easy partitioning press alt to view which side is which. Windows is usally on the left, but after pressing alt it will tell you which side is Ubuntu.


Under the partition bar, there is a message. Click on Advanced partitioning tool orange link and try from there.


I agree that this dialog is confusing and should be improved.

Meanwhile, one workaround is:

  • use some tool to get more information about the current partitions -- for example, boot from a liveUSB and use gparted or cfdisk. As Nirmik pointed out, the Windows partition will be NTFS (or possibly FAT or FAT32) and probably the first partition.
  • write down the exact size of all the partitions on a piece of paper, and note which one is the Windows partition.

  • Later, when you get to that setup screen, look at the size shown on the screen for each partition, and try match them up with the sizes you have written on paper.

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