Reinstall on Zimaboard failure

Hi everyone, I’m fairly new with HA, and I’ve already stumble on a problem I can’t quite solve.
I flashed my Zimaboard with HAOS, but I couldn’t manage to install it on the ssd I connected to the device, it was installed on the internal drive. I thought it was ok for a start and I would have deal with it later. After a system update I got a bunch of errors on HA and I couldn’t control my Homekit devices, so I decided to start over, beginning with a new installation, trying to use the ssd this time.
I created the bootable usb drive, as the first time, and I changed to boot option in the bios, but… It doesn’t start the installation process, no matter what I do, it will always start my old HAOS. It seems the drive doesn’t work, but if I stick it in my pc it seems to work just fine.
What should I do to reset the internal drive and to be able to reinstall it from scratch? I can’t fine anyone online with a problem like this, so I suppose I’m doing something wrong, but can’t understand what it is…

Thanks