On 3/1/22 05:05, Robert Moskowitz wrote:
Well, did not try that. Put in another SD card that already has an
image on it. I can mount it and read it. Unmount and take the device
out of the SD slot, /dev/mmcblk0 still showing when I 'ls /dev' .
Are you able to read and write to an SD card that has a normal
filesystem on it?
So I *THINK* I want to get the system to realize that there is NO
/dev/mmcblk0 (normal situation) when the notebook's SD slot is empty.
It doesn't work like that. The SD card reader is always there, so the
device exists. It's like how you always have /dev/sr0 even if you don't
have a disc inserted.