if it doesnt show after restart, you can see if the sd card gets detected on your pc via sd card reader, if it does show you can do is start cmd and Enter: chkdsk X: /f Ensure to replace X with the letter assigned to the SD card.
We acknowledge your query and apologize for the inconvenience caused to you and will surely assist you regarding the same and please follow the easy troubleshooting steps which might help to solve the issue.
1. Reinsert the memory card. Step 1:Before removing the memory card, first, unmount it for safe removal. On the Home screen, tap Apps > Settings > Device maintenance > Storage > More option > Storage settings > SD card > Unmount.
2. Insert the ejection pin into the hole on the tray to loosen the tray. Note: Ensure that the ejection pin is perpendicular to the hole. Otherwise, the device may be damaged. Step 1: Pull out the tray gently from the tray slot. Step 2: Remove the memory card. Step 3:Insert the tray back into the tray slot Note: Please ensure that the memory card is not removed while the device is transferring or accessing information.
3. Doing so can cause data to be lost or corrupted or damage the memory card or device. Samsung is not responsible for losses that result from the misuse of damaged memory cards, including the loss of data.
Restart the device: Note: If you use the Fingerprint security feature, the phone will require your backup password to unlock after rebooting. Press & hold power key>restart.
In case the issue still occurs. Please register your concern in Samsung Members Application (Open Samsung Members Application > Support> Tap on error report > Type your query > Send).
