Sequoia 15.0 bugs - external hard drives

GizinUK wrote: "...Apple sort this as data loss is a critical issue."

GizinUK ~ Although Apple administers these user-to-user communities, that doesn't include reading each of thousands of daily posts for possible feedback. However, you can tell Apple to "sort this" here:

Feedback - macOS - Apple

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I was so hoping my first failed external hard drive would open after upgrading to 15.3.1, but the "invalid node" structure is preventing it from opening. Was hoping for a miracle but it's just a failed HD. The new SanDisk external is working fine.

What is a powered monitor or USB hub? I’m having the same problem with my sequoia update since the end of February 2025 I cannot use my external drives without them freezing or acting weird turning off and on.

Just getting my new iMac set up and connected it to a new external SSD. I erased its contents but when I tried using Time Machine to back up my data to the new SSD it's recognized but there's a red exclamation mark and a popup which says Backup Disk Not Available - try backing up again when SSD is available. I unplugged the SSD, restarted and reconnected the SSD but got the red ! again. Anyone know what this means?

arathorn357 wrote:

Strange how often the basic 101 support solutions sometime work?

Just feel a bit silly reporting such a simple fix .... cheers Max

Congratulations on determining the cause! 🥳

In case anyone else is wondering ....

The use of “101” to mean “introductory” comes from the North American college and university course numbering system.

Here's the origin:

• In many U.S. (and some Canadian) universities, courses are numbered using a three-digit system.

• The first number usually indicates the year or level of the course:
  • 1xx = first-year (beginner)
  • 2xx = second-year (intermediate), and so on.
• The “01” at the end often implies it’s the first course in the subject.

So, for example:

• “Psychology 101” would be an introductory psychology class.
• “English 101” = basic composition and grammar, often a requirement for all first-year students.

How it became part of everyday language:-

Over time, “XYZ 101” started being used outside academia to mean:

“The very basics of a topic that you need to understand first.”

So now you'll hear things like:-

• “Parenting 101”
• “Cooking 101”
• Or, as in your case, “Support 101”

It’s a handy way to say “Let’s go back to basics.” 😃

HTH

From what I have read, Sequoia does support HFS+, but it is a deprecated format with APFS being the preferred format for all drives and the required format for the boot drive. Sequoia also supports even older formats such as FAT32, not to mention ExFAT. It even supports NTFS for reading, and writing if a third party driver is installed.

After upgrading my iMac M1 to Sequoia 15.3.2 my Seagate external hard drive does not always show up on my desktop. Consequently, I cannot eject the external hard drive and I continually get comments that it was not ejected properly. Is there a fix for this?

same problem here. Aug 25. Mypassport SSD 2TB. Works ok in my iPad but in my Macpro M1 chip asks for allowance to connect the drive, I click ACCEPT and nothing happens. Disk utility does not detect it either. Nor EaseUS data recovery software.

¿anyone knows if apple has recorder this issue and a patch is coming?

Disk Utility cannot find it. Strange.

Eye roll! My external drive works perfectly on my husband's updated iPad with no issue.

The exact same thing is happening to me since installing Sequoia! As a photographer it’s a critical bug that needs fixing!

I've got the same issu with my I Mac and an external HDD. It stopped at 47-48% of the backing or stopped by itself!

Bad news. I'm not able to get a entire Bckup for my puter .

Worked for me. Thanks.