I tried rpi5-boot on my RPi 4 per the instructions from that post, but /dev/sdX is not a valid device on my RPi 4.
To update an SD card in the RPi's SD card slot:
rpi5-boot /dev/mmcblk0
or
if your SD card is in a USB adapter:
rpi5-boot /dev/sdX
where sdX is its assignment (sda, sdb, sdc, etc.)
Statistics: Posted by RonR — Thu Feb 01, 2024 1:20 am