Hello:
In two cases after flashing two latest RPI4 12 nightly builds on sd card, at first boot, an error like this appears in console:
Code
error in mount_storage. mount_common: could not mount UUID-xxxxxxxxxxxx ***
## Starting debugging shell for boot step: mount_storage... type exit to quit ###
then, as I don't have keyboard available, must cold reboot RP4 and normal boot ensues
note: I had edited config.txt before first boot to add some audio overlay, gpio-ir and little else.
I did a scandisk and failsafe extract the card from a Windows PC card reader, and had used LibreELEC USB-SD Creator to flash without error.
Sdcard is a 128GB microSDXC Canvas Go Plus 170R A2 U3 V30, #1 fastest card for PI according to https://pibenchmarks.com/brand/Kingston…us_%28SD128%29/