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Downloaded ubuntu-12.10-desktop-amd64.iso from official website and created the bootable pen drive using Universal USB Installer. Then I booted with it and when asked to select installation type, I selected 'Something Else'

I have Windows 8 OS already installed on this laptop with Intel i5 processor. Is my selected option 'Something Else' right?

I want Ubuntu to install in the selected ntfs drive /dev/sda6. But when I pressed Install now button, an error occurred saying:

No root file system defined. Please correct this from the partitioning menu.

Any help would be really appreciated.

PS: I'm new to Ubuntu as well Linux itself.

Basharat Sialvi
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2 Answers2

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You have to set your mount point, means the point where to install ubuntu (kind of). You may do this, but please, first notice that all data on the selected partition will be deleted, and the file system will be changed from NTFS to Ext4. You may want to save your most important files to a USB stick or make some other kind of backup to be sure. If there is another operating system on the selected partition, it will also be deleted, but you can let go of "something else" in this case and choose what you want to do. My guideline assumes you already have a partition where there is nothing important on it.

  • choose the partition you want to install ubuntu on, by clicking on it.
  • click on "change". A new little window will appear.
  • for "Use as:" choose "Ext4 journaling file system"
  • for "Mount point:" choose "/" (called root)
  • click on "OK" and then on "Install now".
verpfeilt
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When you make a custom partition scheme, you should first make space on the disk by reducing the size of an existing partition. Then you create a partition in the unallocated space. Then you select that partition and choose the mount point. It sounds like you did not perform this third step.

Radu Rădeanu
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