cannot read SD card

Hi, sarrahhakimjee.

We appreciate you taking the time to post in the Apple Support Communities.

If we understand correctly, you have an SD card that works with your Intel-based Mac, but your new MacBook Pro with the M1 Chip isn’t showing the card in Finder. Let’s see if we can find out why:

First, are you using Apple’s USB-C to SD Card Reader to connect the card or another configuration? If it’s another configuration, details about your setup may help us find the reason it isn’t reading on your new MacBook. 

Are you able to confirm that the card is mounted in Disk Utility? 

Disk Utility User Guide for Mac - Apple Support

Is your MacBook reading the connection in System Information?

About System Information on your Mac - Apple Support

These details will help us determine whether the issue is with the Finder UI reporting SD cards or with the actual connection/reading of the card.

Warmest Regards.

You should not have to be a Mac wizard to get your SD card to appear!

this is a known issue...bug that has been ignored since at least november of last year...I have seen solutions like resetting SMC of Mac and going through 2 pages of steps or viewing Disk Utility and renaming card, ejecting, and then re inserting...Obviously these are not real solutions for a bug in Big Sur which should recognize cards inserted in the Mac SD card slot/

Also my cards worked perfectly in my iMac in all previous versions including Catalina so it is a Big Sur bug.