“No root file system defined” error is very common while installing Ubuntu alongside Windows 7 or above. This is because you did not assign any file-system to be mounted in the root directory (/).
The Solution to This Issue is Very Simple:
1. Select the partition to install Ubuntu.
2. Click on edit/change to change the file-system use ext4.
3. On the mount, field write select “/”.
4. Proceed to installation.
That’s All !!
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thx
it had disturbed for a long time, now its fixed ,thanks a lot
Glad it worked.
Thank you
thanks a lot
I click the button of Change,however it does not response.What’s wrong with me ?
I had the same problem. But after removing the external hard disk attached through USB, the partition table becomes editable
Thanks
Straight forward and to the point. This worked. Thank you.
Thanks for helping me to resolve this problem.