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Using usb-stick on MacBook air 3M with OS Sequoia, the device can't handle with every content/ files recorded at an earlier time. Simply data file as pdf, word office, photo files as JPG.
It's very ambarassing.
MacBook Air 13″, macOS 15.0
Sorry, you havn't understood the problem? With Mac OS Sequoia the handling with different formatted sticks has changed. To exchange files between macOS and Windows with "MS-DOS (Fat)" formatted sticks was easy. With Sequoia it is blocked. You have to format in "macOS extended" and this stick will not be readable on Windows.
Question: Do you have a solution for MS-DOS formatted sticks to use on MacOS Sequoia?
Is Sequoia objecting to the app used to open the mp4 file? Open the Settings app, click on Privacy & Security, scroll all the way down to the Security section at the very bottom, and do you see a note that reads “[App] was blocked to protect your Mac.”? There may be an Open anyway option.
Opening in choosing QTP doesn't change anything. In addition, I have an automatic real-time malware scanning, but Apple doesn't realize. No warning signals from this side. I have no note under privacy and security that reads (app) was blocked for security on my Mac.
I had another problem with a MS-DOS (Fat) formatted external memory stick. Copying datas (6 GB) for updating my car's touch-screen from a file. Downloading was ok. The software could not read the storage capacity of the stick. Everything was blocked. Ejecting the stick impossible. I had to force the shut down.
This is new in Sequoia.
The problem has been detected. It was not the formatted Stick in MS-DOS. It was the mp4 file. Opening standard was a software from Nikon, NX Studio, which I never use for video editing, instead of Quick Time Player. NX Studio intercepted the opening process. As a consequence the system could not handle with.
Setting Quick Time Player as the default software for mp4 resolved the problem.
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Released September 2024
macOS Sequoia 15 support
I have no problems with ExFAT formatted USB drives.
It is strange to see the ability to read sticks seems to alter without doing something. I tried pdf, jpg, dmg files. All readable. The only file not to open was mp4 from a Windows computer.
How is your usb stick formatted?
What happened when you tried to open that file?
I used FAT32, copied an mp4 movie to the usb stick on Windows 11 and I was able to play the movie from the stick on Sequoia.
I used a MS-DOS (Fat) formatted stick. Tried to open the mp4 file: A window from Apple opened, indicating, that it was not possible to check for malware.
You could also try Open With QuickTime Player instead of the using the default app.
Try launching QTP and use the Open File option. Could it be possible that your malware scanning software is the problem in Sequoia?
OS Sequoia, usb stick on MacBook air *
