title: How to boot a Raspberry Pi Compute Module 4 (with eMMC ) from a SD card
body: <p>I have a Raspberry Pi Compute Module 4 with eMMC, I'm able to flash from my Ubuntu host the eMMC following the instructions using</p>
  <ul>
  <li>rpiboot</li>
  <li>Imager</li>
  </ul>
  <p>I have flashed a SD card using the tool Imager, but when I introduce it in the slot, It is not booting from the SD but from the eMMC. I have used a Jumper in J2, to disable eMMC boot, but nothing happens, and if I remove the Jumper the board boot from the eMMC. How can I make it boot from SD?</p>
  <p>Thank you for the info.</p>