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Joe Molnar
Asked: 2017-12-20 17:01:03 +0800 CST

Installing Ubuntu, screen does not follow from instruction

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I am following the instructions to install Ubuntu from https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-desktop#0

The screens on the computer look nothing like the instructions. First off, I'm booting from a USB flash drive, the image I have is ubuntu-16.04.3-desktop-amd64.iso.

The download updates while installing Ubuntu cannot be checked, only the install third-party software for graphics can be checked. The instructions on the web page say we suggest you select both.

Instructions on next web page say I will see Allocate Drive Space, where I am to erase disk and install Ubuntu. Instead I see Install, Installation type, /dev/sda.

Why is my screen different than the instructions ?

I am stuck here on a step with no guidance from the instructions. If I click Install Now, the dialog says:

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

There is no Partitioning Menu, however there is a New Partition Table button ..., so I click that believing maybe that is what you mean. (Please be precise next time around.) I get following dialog:

You have selected an entire device to partiton. If you proceed with creating a new partition table ... all current partitions will be removed.

Now I have an extra line under /dev/sda with "free space", I click install now. I get:

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

Again, there is no such thing as a partitioning menu. Why are the instructions wrong!

I played around with this a whole lot, and can't move forward by just intuit-ing the answer.

Please I'm stuck. And I haven't even began to install Ubuntu.

system-installation

1 Answers

  1. Best Answer

    You are unable to download updates during installation because your Ethernet cable or wireless is not connected. You can take care of this and get updates after you've installed Ubuntu. For now, you can proceed with the installation without installing updates.

    You may not be seeing the "Erase disk and install Ubuntu" option because of the way your disk is formatted or partitioned. These instructions will help you partition your disk correctly.

    Note: These instructions assume you want to DELETE your ENTIRE disk. All DATA on your disk will be LOST. All existing operating systems on your disk will be lost.

    1. Launch the installer.

      Notice, I've disabled my network to simulate your situation.

      Click Install Ubuntu

      Step 1

    2. Because the network is disabled, the option to "Download updates..." is not available.

      However, "Install third-party software..." is still available because the DVD already contains the necessary files. You can select this now, if you wish.

      Click Continue

      Step 2

    3. At this point, you sould see the following screen.

      If you see this screen, select "Something else" option and click the Continue button.

      If you don't see this screen, that's OK; just move on to the next step.

      Step 3

    4. On the next screen, you will see your disk. It will be listed as "/dev/XXX".

      Select "/dev/XXX", and click the New Partition Table... button.

      Step 4

    5. In the dialog that pops up, click the Continue button.

      Step 5

    6. Now you will see your disk "/dev/XXX" again.

      There will be free space listed underneath it (if it wasnt there before).

      Step 6

    7. Select "free space", and click the + button.

      Step 7

    8. A "Create Partition" dialog will appear.

      • In the Size field, enter 256 MB.
      • For the "Type for the new partition:", select "Primary".
      • For the "Location of the new partition:", make sure "Beginning of this space" is selected.
      • For the "Use as:" drop-down, select "Ext4 journaling file system".
      • For the "Mount point:" drop down, select "/boot".
      • Click the OK.

      Step 8

    9. Once again, select "free space", and click the + button.

      • The "Create Partition" dialog will reappear.
      • In the Size field, enter the size of memory in your system in MB. It doesn't have to be exact. (Since I have 4GB of memory, I've selected 4096). If you're unsure what to use, 8192 MB would be a good number to enter here.
      • For the "Type for the new partition:", select "Primary".
      • For the "Location of the new partition:", make sure "Beginning of this space" is selected.
      • For the "Use as:" drop-down, select "swap area".
      • Click the OK.

      Step 9

    10. Once again, select "free space", and click the + button.

      • The "Create Partition" dialog will reappear.
      • In the Size field, leave the default value that appears.
      • For the "Type for the new partition:", select "Primary".
      • For the "Location of the new partition:", make sure "Beginning of this space" is selected.
      • For the "Use as:" drop-down, select "Ext4 journaling file system".
      • For the "Mount point:" drop down, select "/".
      • Click the OK.

      Step 10

    11. Finally, your screen should look something like this.

      Click the Install Now button.

      Step 11

    12. A confirmation dialog will appear.

      Click the Continue button.

      Step 12

    13. At last you will see the following screen.

      This is the same as step 8 in the Install Ubuntu instructions you have already been following, so you can continue the rest of the installation from there: https://tutorials.ubuntu.com/tutorial/tutorial-install-ubuntu-desktop#7

      Step 13

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