Using <strong>DebugLib</strong>&nbsp;instead to print a message, I was able to confirm that my driver is now running properly:<br />
<div style="padding-left: 30px;"><strong>cat debug.log | grep Hello</strong></div>
This works both when adding it in the OVMF build and also when inserted by UEFITool.<br /><br />The drivers is not being&nbsp;listed by the EFI Shell&nbsp;<strong>drivers</strong> command.<br />This is expected to me as Dxe Drivers are unloaded after they return.<br />Nonetheless, the same is happening when I package it as a <strong>DXE_RUNTIME_DRIVER</strong>.<br />What is it that I'm missing?<br /><br />Thank you for your attention,<br />Diogo