Problem boot SSD from USB on Rpi3b+

1

Hi,
I’m trying to migrate my HASSIO on Rpi3b+ from SD card to SSD using USB connection.

I notice random SSD don’t boot, last time I solved in this way:

  1. insert SD with HA, green led blink many times
  2. after complete boot of HA I stopped it
  3. removed SD card
  4. attached SSD on n.2 USB 2.0: none in video and none green led
  5. removed power
  6. powered-on again
  7. green led blink only one time, video output ok, HA started fine

I have problem random, after reboot, no video and no HASSIO boot…

I already tried to change power supply (I already use original stock)

some idea?