Ubuntu: Fix "No root file system was set" - how it works

If you get the error message "No root file system was set" during the installation of Ubuntu, you have forgotten a partition. You can read how to fix this error in this practical tip.

"No root file system has been set" - this is how you fix the error

If you have selected "Something different" in the Ubuntu installation menu, for example to manually partition the hard disk, an error may occur if you have not specified a root file system. In order to successfully install Ubuntu, you need a sensible division of the hard disk. We show you how to best divide the hard disk here.

• If your hard drive is empty, "/ dev / sda" appears in the installation menu. Select the drive and click on "New partition table ..." to partition it manually.
• Now "Free space" appears in the line under the drive name. Select this and press the "+" in the lower left corner of the installation menu window. The "Create Partition" dialog opens.
• First create the root partition. To do this, select the size of the new partition (approx. 8-10 GB), the type ("Primary") and the position ("Beginning of this area"). Use the Ext4 journaling file system for the partition. The most important thing is that you select "/" in the drop-down menu "Integration point", because this is the only way to install Ubuntu.
• Next, create the swap partition. This should take up about 1.3 times the RAM.
• Setting up a home directory "/ home" is optional. Your personal files and settings are located here.
• If you are setting up the system with EFI, an EFI boot partition is mandatory.
• A boot partition is recommended if, for example, you want to use a fully encrypted system.

In another Ubuntu practical tip, we will show you how you can change partitions under Ubuntu.