Comment 3 for bug 1889273

Sorry for forgetting about this channel to users.

I'm active at the Ubuntu Forums and AskUbuntu, and you can reach me via email, but I will start watching 'bugs.launchpad.net/mkusb' more regularly ...

Anyway,

- I'm glad that you implemented an own solution. Did you publish it?

- I have an old IBM Thinkpad and a newer Lenovo, V130, a consumer class laptop of the same generation as your Thinkpad, and a Lenovo Thinkstation (tower). They all work with USB drives made by mkusb. So things *should* work in your computer too.

In the Lenovo V130 I have to turn off secure boot in order to switch to booting in BIOS mode alias CSM alias legacy mode. Otherwise it will only boot in UEFI mode. I don't know, but maybe the UEFI/BIOS system is similar in your Thinkpad. If I remember correctly, there were boot problems during the development of Ubuntu 20.04, but I think that the first released version worked.

A few things have been debugged and polished in mkusb during the long delay since you reported this bug, and I think that it should work in your computer now with all current versions of Ubuntu. You are welcome to try the bleeding edge version, now via the unstable repository.

sudo add-apt-repository ppa:mkusb/unstable
sudo apt update
sudo apt install mkusb usb-pack-efi