Mac unable to select files on SD/CF cards after update

mac unable to select individual files in sd or CF card. Neither card is locked or corrupted. I tried using a plug in type mouse and Magic Mouse, neither of which worked. I tried restarting Mac, etc. This behavior seemed to start after last software update. I can drag a whole folder out of the cards onto the desktop, so can access the files that way.

Mac Studio, macOS 26.3

Posted on Mar 2, 2026 5:18 PM

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Question marked as Top-ranking reply

Posted on Mar 3, 2026 2:01 PM

Give this a try: boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.


NOTE 1: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

Deletes font caches, kernel cache, and other system cache files


NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.


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Question marked as Top-ranking reply

Mar 3, 2026 2:01 PM in response to arweber

Give this a try: boot into Safe Mode according to How to use safe mode on your Mac and test to see if the problem persists. Reboot normally and test again.


NOTE 1: Safe Mode boot can take up to 3 - 5 minutes as it's doing the following; 

Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

Deletes font caches, kernel cache, and other system cache files


NOTE 2: if you have a wireless keyboard with rechargeable batteries connect it with its charging cable before booting into Safe Mode. This makes it act as a wired keyboard as will insure a successful boot into Safe Mode.


Mac unable to select files on SD/CF cards after update

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