I backed up my Pi using SD Card Copier to a USB flash drive of the same size. I set the boot order to be USB first. Upon inserting the USB flash drive and removing the original SD card I get the attached errors (see photo).
I did try the USB flash drive in all of the USB ports on my Pi 4.
I¡¯m tempted to wipe my SD card and start from scratch.?
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Thanks & 73,
Jeff
K3JRZ
?#404