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i am trying to install the Startup Disk Creator on Ubuntu Mate (Release 20.04.01 LTS 64bit)

Supposedly it should be pre-installed but I tried with command “usb-creator-gtk” and got the message that it cant be found but installed. I then tried to install trough command “sudo apt install usb-creator-gtk” This gave me the following error messages:

E: Type 'dep' is not known on line 1 in source list /etc/apt/sources.list.d/brave-browser-release.list
E: The list of sources could not be read.
E: Type 'dep' is not known on line 1 in source list /etc/apt/sources.list.d/brave-browser-release.list
E: The list of sources could not be read.

I read in an different answer that “sudo apt update” /upgrade should do the trick but this gave me error messages as well

E: Type 'dep' is not known on line 1 in source list /etc/apt/sources.list.d/brave-browser-release.list
E: The list of sources could not be read.
E: Type 'dep' is not known on line 1 in source list /etc/apt/sources.list.d/brave-browser-release.list
E: The list of sources could not be read.

How should I proceed?

Thank you for your help!

karel
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Tiam
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  • Hello. Remove line 1 in the sources list. It has nothing to do with what you are trying to do but it is what the error is about. Something to do with the brave browser. – David Mar 17 '22 at 15:30
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    You should be able to install Startup Disk Creator by running sudo apt-get install usb-creator-gtk I honestly don't know if it will work. If it doesn't, check https://ubuntu-mate.org/faq/usb-image/ for a possible solution – Logan Mar 17 '22 at 15:44
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    Does this answer your question? How do I fix this "E: Type '*' is not known on line * in source list ..." update error? – karel Apr 22 '22 at 04:23
  • If SDC is not there for you, you can use Disks to restore the ISO file to a blank USB disk. – C.S.Cameron Apr 22 '22 at 14:25
  • Saving time for all of us that seek an answer based on the title: Choice 1. sudo apt install usb-creator-gtk. execute with: usb-creator-gtk. Operation: Pick the source image (downloaded iso) and destination usb and click "make startup disk". Choice 2 (alternative): sudo apt-get install gnome-disk-utility. execute: gnome-disks. Operation: Select the empty medium -> click on 3 dots -> "Restore image" -> select the downloaded iso -> click on "Start restoring". There is also a related asnwer for ubuntu 19. – Marinos An Sep 29 '23 at 10:35

1 Answers1

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Your brave-browser-release.list file has a typo. Instead of dep, it should be deb. Fix this file, then update apt. The message should disappear.

To correct the file, do this:

  1. Open Terminal (if it’s not already open)

  2. Open the source file with the help of sudo:

    sudo nano /etc/apt/sources.list.d/brave-browser-release.list

  3. Find dep and change it to deb

  4. Press Ctrl+X to exit

  5. Press Y when asked if you want to save the changes

  6. Update apt:

    sudo apt update

    Depending on how long this file has been broken, you may have a lot of pending updates to install.

As for the disk creator, it’s hidden in a right-click action on Ubuntu MATE. Right click the .iso file and select “Open with Disk Image Writer”

matigo
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  • Thank you very much, you are right. Can you please also explain to me how to fix the file or point me to a resource that explains this? I am very much a newbie. Thank You! – Tiam Mar 17 '22 at 18:43
  • I’ve updated the answer to show how you can correct the issue – matigo Mar 17 '22 at 22:54