I'm posting again since i wasn't precise enough in my last post. I'm trying to boot a raspberry pi 3b v1.2 from usb. Hardware used :

-Adaptor: https://www.amazon.com/GiGimundo-Cable-External-Converter-Transfer/dp/B0B99ZGZ9Q/

-Drive: Kingston A400 120gb ssd

Both the drive and the adaptor are working fine on my pc.

I flashed the latest image of raspberry os lite 64 bit to both the ssd card and the drive, modified the program boot mode to 1 which worked successfully. The problem is when i remove the ssd card and plug the drive It doesn't boot. I don't know where the problem might come from. The adaptor has a usb c power input but it doesn't change anything if it's plugged in or not.

I'd gladly accept any help :)