Mac not detecting SD

I bought a new micro sd card, I put it in the slot but it does not show up in disk utility on mac although it did ask a request after inserting it once but never again

It sounds like your Mac detected the microSD card initially but is now failing to recognize it. Here are some troubleshooting steps you can try: ### 1. **Check Finder & Desktop Visibility** - Open **Finder** > **Preferences** > **Sidebar** and ensure "External disks" is checked. - Go to **Finder** > **Preferences** > **General** and make sure "External disks" is enabled to appear on the desktop. ### 2. **Check Disk Utility (Even Unmounted Disks)** - Open **Disk Utility** (Applications > Utilities > Disk Utility). - Click **View** (top-left) and select **Show All Devices** to see if the SD card appears but is unmounted. - If it appears, select it and click **Mount**. ### 3. **Check System Information** - Click the **Apple menu** > **About This Mac** > **More Info** > **System Report**. - Under **Hardware**, select **Card Reader** or **USB (if using an adapter)**. - If the SD card reader is detected but the card is not, the issue may be with the card. ### 4. **Try a Different Port or Adapter** - If you're using an adapter, try a different one. - If your Mac has multiple card slots (unlikely), test another one. ### 5. **Reinsert the MicroSD Card & Restart Your Mac** - Remove and reinsert the card. - Restart your Mac and check **Disk Utility** again. ### 6. **Test the MicroSD Card on Another Device** - Insert the card into a different computer or a phone to verify if it's working. - If it works elsewhere, the issue is with your Mac’s reader. ### 7. **Reformat the MicroSD Card (If Detected Elsewhere)** - If the card works on another device, back up your data. - Format it as **ExFAT** or **MS-DOS (FAT32)** for macOS compatibility. - Reinsert it into your Mac and check again. ### 8. **Reset NVRAM & SMC** - Restart your Mac and **reset NVRAM** by holding **Option + Command + P + R** at boot. - Reset **SMC** (for Intel Macs) by shutting down and pressing **Shift + Control + Option + Power** for 10 seconds. If the card still doesn’t show up, it may be defective. Let me know what you've tried, and I can suggest more fixes!

none of that worked

If none of those steps worked, let's narrow down the issue further: ### 1. **Does the SD Card Work in Another Device?** Try inserting the microSD card into another device (Windows PC, phone, camera, etc.). - **If it works elsewhere:** The problem is with your Mac’s card reader or macOS settings. - **If it doesn’t work elsewhere:** The SD card might be faulty. ### 2. **Check with a Different SD Card** Try inserting a different microSD card into your Mac to see if it detects that one. - **If another card works:** The issue is with your new microSD card. - **If another card also doesn’t work:** The issue is with your Mac’s reader or software. ### 3. **Use a USB SD Card Reader** If you have a **USB microSD card adapter**, try inserting the card through that instead of the built-in reader. ### 4. **Check for SD Card Reader Issues in Terminal** - Open **Terminal** (Applications > Utilities > Terminal). - Type the following command and press **Enter**: ```sh diskutil list ``` - If your SD card is listed, but not mounted, try mounting it manually: ```sh diskutil mountDisk /dev/diskX ``` (Replace `diskX` with the actual disk number of your SD card.) - If the card is **not listed**, check if your system detects the card reader: ```sh system_profiler SPCardReaderDataType ``` - If your reader is detected but no card appears, it may be a compatibility issue. ### 5. **Try Booting into Safe Mode** - Restart your Mac and hold **Shift** until you see the Apple logo. - Try inserting the SD card again and check **Disk Utility**. ### 6. **Create a Live USB (Linux) to Test the SD Card** - If you have a USB drive, you can boot into a **Linux live session** (like Ubuntu) and see if Linux detects the SD card. - If Linux detects it but macOS doesn’t, macOS might have a software issue. If **none of these steps work**, it's likely that either: 1. **The SD card is defective.** (If other devices don't detect it either.) 2. **The Mac’s SD card reader is faulty.** (If other cards also don’t work on your Mac.) 3. **macOS has a deeper system issue.** (A clean reinstall might help in that case.) Let me know what you find!