Hi,
I used to run from USB stick with the SD-card trick (special bootcode.bin), which allowed only the SD-card to be used during the initial bootup, thereafter switching to my USB disk.
To improve the speed of the operation, I decided to try to use an M.2 SSD I had lying around. I use the SSD in an enclosure.
I installed LibreElec on my M.2 SSD as I did on my USB drive, expecting the same result.
Unfortunately I get an error when booting: