Windows 10: SD card not detected unless inserted before boot

I have a common issue with my SD card where the card is not detected if I insert it while Windows is running. If I insert the card before booting up, then the card is recognized. The card works as expected with other operating systems. Version 20H2

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My Lumia 635 is not detecting SD card

Hi,

You may try the following steps:

• Try to remove the SD card and insert it again, make sure it's seated well without using too much force.
• If it still does not recognize the SD card, you may try to connect your SD card to PC via a card reader and format.
• Try using a different SD card and check if your Lumia 635 will recognize it.

 

Boot from SD card Reader?


It likely depends on what the BIOS thinks the device is? If it shows up like a USB thumb drive it should work. If it requires drivers to even be detected it won't.
I know I wish I could boot from the built in SD Card reader in my laptop but the BIOS does not even see it. It's not listed as a boot option even with a bootable SD card in it.

 

SD card inserted into PC doesn't do anything

Hi,

We may need to do further investigation to identify the issue and its cause. Please provide us the following information:

• Have you tried inserting or connecting other SD cards?
• Are you getting any error messages when trying to insert the SD card, or when trying to connect the camera? If so, please send us a screenshot.
• Are you getting any error messages in Device Manager? Please send us a screenshot.

In the meantime, we suggest that you run the Hardware and Devices
troubleshooter to scan your computer, identify the problem, and attempt to fix the issue automatically. You may refer to the steps below:

• Press Windows key + R and type Control Panel.
• Type troubleshooting in the search bar and click on
  Troubleshooting.
• Click on Hardware and Devices.
• Follow the steps from the wizard to run the troubleshooter.

Let us know how it turns out.