Fireandice256 GB Image

Quote from Urmel_aus_dem_e on June 10, 2019, 11:25 am

Hello,

I tried to use flash the image under Win10 onto a Sandik Ultra 256 GB card. First aof all the card was about 238MB too small.

So I mounted the image under Ubuntu and deleted some PSX roms, then shrunk the image. So far so good.

After flashing the image, a Pi 3B constantly shows an undervoltage error and a Pi3B+ shows activity on the LEDs but

never shows more than a black screen. (Power supply delivers 3000mA).

After flashing a clean, empty retropie image onto the same card both devices boot as they should.

What am I doing wrong here? Can someone help me with this?