SD card reader not working on high sierra

Are you absolutely sure the card is FULLY and yea FIRMLY

pressed ALL the way in, try removing and reinserting evenly.

Try again if failed to insert not slowly but quick.

If again failed, then NOTE on card some landmark such as a letter or symbol

then - remove card, and wait 30 seconds, and reinsert but this time not going

all the way in but just shy of being fully inserted.

You can also check to see if it may be showing up in the computer

but not on the desktop in terminal by typing either;

diskutil list

or go type;

'cd /Volumes' without quotes

and then typing ls

Then you can verify it;

in my case it would be:

diskutil verifyVolume CANON_DC

To Repair the drive in my case I'd run;

diskutil repairvolume /Volumes/CANON_DC

if you were doing this to your Mac Hard Drive it would look like this:

diskutil verifyVolume "Macintosh HD"

And it would take quite some time.

Make sure your set to see it in finder preferences:

ALSO, it is possible the reader is damaged.

Help me to solve the missing SD card reader on my iMac with High Sierra 10.13.2:

How to reset NVRAM on your Mac - Apple Support

This method was suggested by Apple help, where i have found it first.

No more missing SD card reader.

Leo

As previously mentioned, there's nothing wrong with the cards. I've tried numerous cards, all of which worked prior to upgrading to High Sierra and still work with readers other than the built-in one. This seems to be a bug that was introduced with macOS High Sierra and is specific to certain model Macs' internal card readers. Considering 324 users here indicated that their SD card reader is not working under High Sierra, the issue doesn't appear to be just a random card reader failure, but rather a specific problem introduced with this version of the macOS. Others have reported that downgrading to Sierra restores their internal card reader's functionality. There may be a few people who are reading this who might actually have a bad card reader or a bad card, but there also appears to be a bona fide problem/conflict introduced by macOS High Sierra that's disabling certain models' internal card reader.

Same problem here, with iMac 2015 ( 21" and 27") using the internal SD card reader. No icon on the desktop. If you rename the SD card with Disk Utility ( there is the SD card visible ) the icon appears on the desktop.

The SD card is again visible.

Update needed for High Sierra I guess, Apple.

Best Regards

I found that the maker of my card reader, Transcend had issued a firmware update. I did not expect a firmware update for a card reader. Live and learn!!!

I would add that it did not solve the problem, though it may for some people. My Mac is just 10 days old so Apple Care is looking into the problem, having tried all the mentioned fixes whilst on the phone today. It's now been passed over to the Tech Team, hopefully an answer will be forthcoming next week.

Interestingly when I plug in my old wired USB Mac keyboard and then plug the card reader into one of the keyboard USB sockets the card reader works perfectly.......now that I find pretty epic! Confused Apple Care as well!

@Peter, it's been well established though the discourse of this topic discussion that this thread's issue has been isolated to certain Mac models (specifically 2010 Mac minis). The INTERNAL card reader on those specific Mac models are disabled when people upgraded to Mac OS High Sierra, despite Apple's claims that these Macs would support OS 10.13.x High Sierra. External card readers, such as the one you referred to, is not the issue being addressed here (as it's been well established that people with the disabled INTERNAL card readers can use external readers as a workaround). If your external card reader had an issue, and you found a solution, please start a new thread as this one is focused on the loss of functionality of Apple's own built-in internal SD card reader after upgrading to 10.13.x (High Sierra) - i.e. a completely different one than that of your external card reader.

An SMC Reset has been known to fix that problem.

robogobo,

Thank you!

After I refreshed the info for the Card Reader with (command+R), the card name appeared in the finder and I was able to transfer the photos.

Leo

I had the same problem with a Sabrent Card Reader plugged into my iMac. A PRAM reset got it back.

You have to refresh the info (command-R) after you insert the card. Or quit and relaunch System Information.

Until you know whether it's software or firmware/hardware, I'm not sure what you can do other than getting an external card reader.

submit feedback directly to apple here Feedback - Mac mini - Apple

Do you have all of these checkboxes selected on your Mac?

With the card in the reader does Image Capture see it? If it does export all of the files to a folder on your Desktop.

Then reformat the card. If it's a card from a camera put it in the camera and reformat using the camera. Take some test shots and try the card reader again.

Do all cards not show up?

I have a mid 2010 iMac with this problem. I was trying to use my SD card from my Nikon D40 but the only time it would mount would be when I restarted with the SD in the slot.

After no luck trying several things, I updated to 10.13.2 + restarted with the SD in the slot + renamed the SD card. I took took the card out and put it back and it worked.

I'm not sure if the update matters but try to rename the card.

To all you people giving advice for what worked for you PLEASE READ PREVIIOUS COMMENTS before typing what you perceive to be the obvious solution. This discussion is about a very specific issue that impacts certain makes and models Macs (with the majority of the people experiencing this issue being 2010 Mac mini users). 5K iMacs are not what we're talking about. If you had a problem with your 5K iMac's card reader, please post it in a new topic discussion, as your issue and your solution are probably both valid, it's just that they're not relevant to this discussion. Mac OS High Sierra rendered the internal drive reader inoperable on certain older model Macs that Apple stated are OS High Sierra compatible. There are quite a few people experiencing this issue, and it's no coincidence that we are all experiencing it on the same specific models. There's nothing physically wrong with the card reader, nor is there a problem with the cards. This is an OS High Sierra specific issue that impacts certain makes and models that Apple needs to address with a software update. Speaking for myself, I have tried ALL of the recommendations listed to no avail (and I'm fairly confident others have too). SMC reset does not fix it, nor does blowing compressed air in the slot, safe boot, etc... etc.. etc.., The only solution that appears to work successfully for those specific Mac models is downgrading the OS to the previous version (i.e. OS 10.12 or earlier), which anyone who's done can attest is not a pragmatic fix.

Seriously. Though the thread title should be changed to be more specific to the Mac Mini. People are responding to off topic posts with solutions for all sorts of things because they don't read the original post.

Actually, since the 2010 Mini is officially obsolete and this is pretty clearly a firmware issue, there's little hope for a fix other than perhaps a downgrade to Sierra. So the thread might as well be closed. Really a shame.

You may need to reformat the SD card.

Boot using command-R

go to disk utilities

click view all

format the SD card to Fat32

This should fix the issue. It worked for me.