SD Card not recognized unless MacBook M2 Pro Sequoia 15.3.2 is restarted

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Level 1

4 points

SD Card not recognized unless MacBook M2 Pro Sequoia 15.3.2 is restarted

Hello,

I’m using a MacBook Pro with the M2 Pro chip running macOS Sonoma 15.3.2 (build 24D81). My Mac doesn’t recognize any SD cards when inserted — including a Samsung EVO Plus and several others I’ve tested, using different adapters.

The only workaround I’ve found is restarting the MacBook with the SD card already inserted. After that, it appears and works fine. But if I eject and reinsert the card, macOS doesn’t detect it anymore — until I reboot again.

Has anyone encountered this issue? Is there a known solution or workaround?

Thank you in advance!

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Здравствуйте,

Я использую MacBook Pro с чипом M2 Pro под управлением macOS Sonoma 15.3.2 (сборка 24D81). Мой Mac не распознаёт ни одну из SD-карт при вставке — включая Samsung EVO Plus и несколько других, которые я пробовал с разными адаптерами.

Единственное временное решение, которое я нашёл — это перезагрузка MacBook с уже вставленной SD-картой. После перезагрузки она появляется и работает нормально. Но если я извлекаю и снова вставляю карту, macOS больше её не видит — пока снова не перезагружу систему.

Кто-нибудь сталкивался с подобной проблемой? Есть ли известное решение или обходной путь?

Заранее спасибо!

[Re-Titled by Moderator]

MacBook Pro 14″, macOS 15.3

Posted on May 9, 2025 4:41 AM

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Answer 1

Top-ranking reply

HWTech

Level 9

68,384 points

May 10, 2025 9:16 AM in response to MoonHush1858

Does Disk Utility see the physical SD card? Within Disk Utility you may need to click "View" and select "Show All Devices" before the physical drives appear on the left pane of Disk Utility.

Since this is an M-series laptop, try changing the Privacy & Security System Settings for "Allow accessories to connect" to "Automatically when unlocked" to see if that makes any difference. I have found that macOS may not always prompt the user for confirmation when connecting accessories. Configuring this setting to this value really should not affect your security at all since you are likely to click yes/confirm anyway when connecting the device.

If your Mac asks you to allow an accessory to connect - Apple Support

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Answer 2

May 10, 2025 9:17 AM in response to MoonHush1858

By far the easiest way to cause poor performance, instability, overheating and crashing is to install ANY third-party speeder-uppers, Cleaners, Optimizers, or Virus scanners, Bit Torrent, or a VPN that you installed yourself.

¿Are you running anything like that?

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Answer 3

May 10, 2025 7:22 AM in response to MoonHush1858

After inserting a different card, you should be able to launch Disk Utility, and it should allow you to select the device and choose to MOUNT its Volumes.

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Answer 4

Jun 5, 2025 5:19 AM in response to MoonHush1858

I have the same problem , SD card only show when the Mac is rebooted with the card inserted. If inserted after boot , it does not show on the desktop / finder or disk utility. I have tried all the "Accessories allow to connect" options, and all the SD cards i can find, but nope it only will show if i reboot with the card in. I think this started since it did clean install a few weeks back. An External reader works fine.

M2 Macbook Pro - OS15.5

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Answer 5

May 9, 2025 11:37 AM in response to MoonHush1858

The current stable release of Sequoia including bug fixes, security updates is macOS 15.4.1 - I would start there.

Keep your Mac up to date - Apple Support

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Answer 6

MoonHush1858 Author

Level 1

4 points

May 9, 2025 4:34 PM in response to Grant Bennet-Alder

Yes, I always eject the SD card properly using Finder or Disk Utility before removing it. Despite that, the issue still persists — the SD card is not recognized again unless I reboot the Mac with the card already inserted

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Answer 7

MoonHush1858 Author

Level 1

4 points

May 9, 2025 10:57 PM in response to Grant Bennet-Alder

Yes, it’s the same card, but as I mentioned earlier, I’ve also tested with different SD cards and multiple adapters — the issue is the same. Previously, macOS didn’t have any trouble recognizing cards after reinsertion, but at some point it suddenly started behaving this way

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Answer 8

MoonHush1858 Author

Level 1

4 points

May 10, 2025 8:58 AM in response to Grant Bennet-Alder

I’ve already tried that — I mentioned earlier that Disk Utility doesn’t show the card at all after reinserting it. It used to work just fine before, but for some reason it suddenly stopped behaving as expected. I feel like you’re not hearing me: I’ve already tried multiple cards, multiple readers, and checked Disk Utility — the SD card simply doesn’t show up unless I reboot with it already inserted.

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Answer 9

MoonHush1858 Author

Level 1

4 points

May 10, 2025 9:11 AM in response to MoonHush1858

Update: None of the suggestions here solved the issue for me. However, while I was working on my Mac, a notification suddenly popped up saying that my SD card was connected — without me doing anything special. I still don’t know what triggered it, but it’s working now(

Thanks to everyone who tried to help!

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Answer 10

May 9, 2025 4:32 PM in response to MoonHush1858

Are you actually telling MacOS to EJECT the drive, not just pulling it out, before removing it from the machine?

If not, getting it to recognize a new drive will be very difficult.

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Answer 11

MoonHush1858 Author

Level 1

4 points

May 9, 2025 4:32 PM in response to leroydouglas

Thanks for the suggestion! I’ve already updated to macOS 15.4.1, but unfortunately the issue still persists — the SD card is only recognized after a reboot with the card already inserted

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Answer 12

May 9, 2025 7:21 PM in response to MoonHush1858

Is this the SAME card you just had in the reader?

That is the second hardest case after just pulling it out.

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