Some solutions to fix SD card not showing up on Mac or Android are also included.
What Might Cause SD Card Not Showing Windows 10?
Why is my SD card not showing up on my Windows 10 or Mac computer?
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The causes to this issue could be hardware or software problems.
you might click Start -> Power -> Restart to simply reboot your setup.
After that, verify if the SD card is detected by your Windows 10 computer.
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Fix 2. you could first look to see if the issue is resulting from hardware problems.

Fix 3.
Run Hardware Troubleshooter
Windows has a built-inhardware troubleshooter.
you might run it to troubleshoot hardware problems.

Step 1. you’re free to pressWindows + Ito open tweaks.
ClickUpdate & Security -> Troubleshoot.
Scroll down in the right window to find and clickHardware and Devices.

And clickRun the troubleshooterbutton.
Windows will automatically find and fix problems with devices and hardware.
Check the solutions below to fix them one by one.

Fix 4.
PressWindows + Xand selectDevice Managerto open it.
ExpandDisk drivesand right-click your SD card gear and chooseUpdate driver.

Fix 5.
Its advised yourun Windows Defenderor installed third-party antivirus software to perform a malware/virus scan.
Malware/virus infection may also cause SD card files hidden.

Fix 6. you could easily assign a drive letter for the SD card for free viaDisk ManagementorMiniTool Partition Wizard.
Check how to set a new drive letter for the SD card.
Step 1. you might pressWindows + R, typediskmgmt.mscin Run box, and pressEnterto open Windows Disk Management.

Find the removable SD card drive, and right-click it to chooseChange Drive Letter and Paths.
Then you might clickAddbutton in the pop-up window to assign a new drive letter for the SD card.
you might also use MiniTool Partition Wizard to easilychange drive letter.

After this, you might open File Explorer again to peek if the SD card appears in Windows 10.
Fix 7.
Disable and Enable SD Card Reader in gadget Manager
Fix 8. you might follow the steps below to remove write protection of the SD card.

Remove Write Protection withDiskpart
Fix 9.
Next you might typechkdsk /f /rcommand, e.g.
chkdsk e: /f /r, and pressEnter.
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Fix 10.
MiniTool Power Data Recovery is one of thebest data recovery softwarefor Windows.
Novice users can use it with ease due to its extremely intuitive interface and operation.
Corrupt, damaged or formatted hard drive is supported.
It can cope with various data loss situations.
MiniTool Power Data Recovery FreeClick to Download100%Clean & Safe
Step 1.
Use the SD card reader to connect your SD card to Windows computer.
Then launch MiniTool Power Data Recovery.
Choose the partition of the SD card under theLogical Drivessection and clickScan.
Alternatively, you’re able to switch to theDevicestab to choose the SD card.
After the software finishes the scan, you could check the scan result to find the needed files.
How to format SD card on Mac without losing data?
Check and clean the SD card
Fix 2.
Tick External disks option in Finder Preferences
Fix 3.
Show up SD card in Finder
Fix 4.
Show up the SD card in Disk Utility
Open Disk Utilityon Mac.
Click View at the top and choose Show All Devices.
Then you’re able to look to see if the SD card displays in Disk Utility.