On 3/1/22 14:07, Robert Moskowitz wrote:
On 3/1/22 14:58, Samuel Sieb wrote:
> 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.
I have nothing in the SD slot right now (oh, this is a Lenovol x140e).
'ls /dev/' does NOT list a mmcblk0.
Sorry, you're right. I was getting it confused with the USB ones that
create sd? devices for all the slots even when there's nothing inserted.