Level 1

4 points

MacBook Pro M1 cannot enter Safe Mode after macOS Sequoia update

After updating sequoia 15.0 3.9.2025 I am getting system extension error. I checked the privacy safety options and re enabled a couple of programs. The error persisted. Thus far programs working well but anxious.

Checked community and this happens regularly with previous versions.

Safe mode is the next thing to try.

I cannot get it to engage, checked option system info confirms not engaged.

When I left mouse click and shift key click the hard drive option as per safe option instructions no safe mode "bubble" appears. Tried 10 times now. Others listed 3y ago had this problem.

[Re-Titled by Moderator]

Original Title: Macpro M1 cannot enter safe mode

MacBook Pro 16″, macOS 15.6

Posted on Sep 4, 2025 4:40 AM

Top-ranking reply

John Galt

Level 10

155,384 points

Posted on Sep 4, 2025 6:50 AM

Bazcook wrote:

Have others have had the issue with the sequoia update. Some say can be conflicts with spy checker I use Norton

That was an important piece of information.

Uninstall "Norton" in accordance with its instructions. Never install it, or anything like it, ever again. Rule 1 of Macs is don't install junk.

Your problems may have only just begun, depending on the degree of damage it may have inflicted. It may be required to completely erase that Mac and reconfigure it from the ground up.

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21 replies

Bazcook Author

Level 1

4 points

Sep 4, 2025 6:26 AM in response to John Galt

I am exactly following the instructions…..

Bazcook Author

Level 1

4 points

Sep 4, 2025 6:32 AM in response to Bazcook

Have others have had the issue with the sequoia update. Some say can be conflicts with spy checker I use Norton

Owl-53

Level 10

102,565 points

Sep 4, 2025 1:06 PM in response to John Galt

@ John Galt

Not that is will alter OP's semi instance of using or not using AV software

Though it may dovetail into their reference to AI in an earlier posting

https://www.on1.com/

😎

John Galt

Level 10

155,384 points

Sep 4, 2025 1:47 PM in response to Owl-53

👍

Bazcook Author

Level 1

4 points

Sep 5, 2025 3:55 AM in response to Owl-53

JG what is OP....?

Yes ON1 2026 is on special offer...massive upgrade!

Hopefully Norton will be uninstalled!

Best

Barry and tks again...learnt a lot!

Bazcook Author

Level 1

4 points

Sep 5, 2025 5:49 AM in response to Owl-53

Ahhhhh...tks!

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MacBook Pro M1 cannot enter Safe Mode after macOS Sequoia update