SSD not mountable on Sonoma 14.0

This is a further example that Sonoma isn't working with exFAT external drives. Big problem that needs to be fixed.

My exFAT external hard drives stopped mounting on Mac Studio Sonoma APFS system. Had to use EaseUS software to get into the unmounted drive and copy files over to another drive I had formatted APFS.

Has Apple said anything about this problem. The recent update said it solved a bug with encrypted drives not mounting... but my drives aren't encrypted. Recent update didn't solve the exFAT problem.

Same issue with me. I had several exFat formatted external drives which used to work just fine. Since I update Sonoma to 14.1, I can no longer access them. Disk utility sees them but can no longer mount them.

Have same issue, on Windows SSD works perfectly while 2 macbooks cant see it anymore.

But mine wont even show up in disk utility.

When first time connected i got question about allowing this device and after confirmation nothing happens.

This helped me. I realized that my Mac didn’t read exfat when it was formatted on my windows laptop, so I tried formatting in exfat on Sonoma and it worked in both the windows and Mac system. Try reformatting on your Mac and see if that helps. Good luck.

Hi Everyone,

I recently encountered a problem with my hard drive: when connected to my MacBook Pro, it wasn't recognized, though it was visible on devices running older software. This was very frustrating, but I found a fix that worked for me and might help you too.

I switched my USB-C cable to the Cable Matters [Intel Certified] 40Gbps Thunderbolt 4 Cable, 1m in length, which supports 8K video and 240W charging. This cable is also backwards compatible with USB4, Thunderbolt 3, and USB-C. After using this cable to connect my SSD, everything started running smoothly, and I could access all content on the SSD.

Good luck! Marcin, habitetresinandconcrete.com

The SSD that is not readable is the one I have all my backup on, while moving to macOS.

The issue is still there. I can not mount my two SSDs

Me too

I can mount the thumb drive but I can not back up files to it

Jesper

Update

Ordered Anker USB-C to USB 3.0 female adapter and plugged the thumb drive in. I was then able to copy a file ( a back up file) to the thumb drive which was FAT 32 formatted. The old drive FAT 16 formatted still will not accept the file, even with the new adapter. Copied all the old fat16 files to the fat32 formatted drive.

"Did anyone experience similar issues ever since updating"

----

Nope, we have three Macs on Sonoma and the seven SSDs attached to them continue to work flawlessly.

I am running the latest version of Sonoma 14.2.1 and having the same problem.

my issue is that this happens with the SSD I have all my backup to.

Is there any solution?

exFAT is fine for Windows, Linux and Mac but Android doesn't support it. Apple should be supporting at least FAT32 as it's the most widely used format outside the Mac community.