thinkpad t510

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    Can't boot my Ubuntu OS on my laptop

    Hi, I used a external ssd to install a Ubuntu version (Ubuntu 22.04.3 LTS), the goal is to have a "portable ubuntu OS" that i can use on my different computer. On my 'main' laptop i can boot the OS and use it like a normal OS. But when i want to boot it on a old laptop: Lenovo ThinkPad T510, i...