PI desktop: unable to reboot when booting from SSD

Question

My Pi desktop is unable to reboot. The power is always turned off during the reboot process. Shutdown and Reboot give the same result. The blue power LED ring is flashing during the reboot. The process continues until the rainbow screen is shown before the power is cut. My PI desktop is booting from a SSD, and doesn't have a SD-card mounted. I've read that booting from anything but the SD-card results in an extra delay in the booting process. May this cause the problem? If so is there a solution to the problem? I have also tried a more powerful USB power supply with the same result.

I have the following components:

Elements 14 Raspberry Pi Desktop Case with On/Off Button, mSATA, RTC

Pi 3 Model B revision a02082, Linux raspberrypi 4.9.80-v7+, not using a SD-card

SAMSUNG SSD 850 EVO 500GB

USB power supply 5V 1.8A

dagv · Answer

Hi.

Probably your power supply is unefficient.

I recently set up a pi desktop with a 2.0 A power supply and a 120GB mSSD, and got

complaints about unsufficient power. You should at least get a 2.5, maybe a 3.0 A

power supply.

At least try this before anything else.

Dag