1. Flip lock switch to other position: Now different error" The request could not be performed because of an I/O device error". Flip back. Now original message.
2. Reboot windows did not fix
3. Try Quick format to Fat32. did not fix
4. Run as Administrator did not fix.
5. Power cycle display (with reader) did not fix
6. Try slow format to Fat32. did not fix
8. "For anyone still experiencing this open CMD as admin and run these commands:"
Code: Select all
diskpart list disk select disk <#> (select the sdcard) clean create partition primary format fs=fat32 quick assign
9. I did a shut-down to shut PC power completely off. Funnily, then the front-panel PC push button to boot would not work. Finally, I turned off the back panel master power switch for 10 seconds. Then on again. Now boot button works. BIOS gets reloaded. Windows boots. Now plug in the SD card. Now Explorer says I have a J: and a K:. It lists J: as "USB drive" and lists K: as "boot". I don't understand why one SD card generates two entries? So I decided K: was the one I needed. Then I ran Win32DiskManager (with it's short-cut tagged 'Run as Administrator) pointed to the .img and K: and programmed the SD with no errors.
I am not sure if step 8 helped.
It seems to me that somehow the BIOS was messed up. Soft Windows reboot may/does not(?) rerun all the BIOS stuff. Power off/power on makes sure everything is clean.