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I have decided to install Ubuntu for office, programming and GFX along Windows 8.

I have made a USB - Bootstick and so on, created a 100GB partition for Ubuntu, so I wanted to install it on this partition, but he asks me for a root partition, but i still dont get what to do now.

Can u help me?

I am using Windwos 8 and have a Mainboard with UEFI.

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  • Ok, can i use this partition to divide it in these two? How big should they be?
    – Sparkay
    Oct 31, 2013 at 14:02

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Update for Ubuntu 18.04 and above

New installations of recent versions of Ubuntu does not use a separate swap partition any more. They use a swap file by default.

Original Answer

Some Basics

Ubuntu needs at least two partitions to work well. One is called the root partition denoted by / and is formatted ext4 and the other is called Swap with its own format. Windows does not understand these formats.

So you can't use Windows to create these partitions.

What to do?

The partition you created in Windows is not suitable for Ubuntu. Delete the 100GB partition you have created and leave the space unallocated.

When you install Ubuntu, it will find the unallocated space and create the partitions it needs automatically. The Swap will be a small partition (2-4 GB) used as virtual RAM and the rest of 100GB will be /.

See How do I install Ubuntu alongside a pre-installed Windows with UEFI?

and Ubuntu installation on Windows7 with D partition for more details.

Hope this helps

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  • This is what I wanted to know, I will try it and come back later!
    – Sparkay
    Oct 31, 2013 at 20:17
  • Ok here I am, it worked until the final installation then the installation programm crashed because GRUB couldnt been installated. The swap partition hasnt been automatically. He asked me but i had no other partition so I went forward without a swap partition....
    – Sparkay
    Oct 31, 2013 at 21:30
  • Did you choose manual partition (something else)? Search for **GRUB Repair" to fix the GRUB problem.
    – user68186
    Nov 1, 2013 at 2:55

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