Can I update my iMac to macOS Sequoia?

Hi All,

I'm looking into ugrading to OS Sequoia but have read that there have been some issues with with some users.

For instance, I've seen issues with intel based devices.

I've a 2020 27" iMac [see attched].

Advice, please do I go for the update or steer clear?

Many thanks.



[Re-Titled By Moderator]

Posted on Feb 4, 2025 2:53 AM

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14 replies

Feb 4, 2025 3:11 AM in response to Tony T

As long as you have at least 2 or more Backups that are current


Obviously having enough Empty Space


Software-wise none of the below software installed


Commercial VPNs 


Third Party Security Software 


Third Party Disk Cleaners / Optimizer 


Memory Cleaner


This machine is configured with a SSD drive of various sizes, so should be just fine


Though so may report issue related to Intel versus Apple Silicon


Let us remember.


Appe Designed and Built this computer and designed Sequoia to Function at Optimal Levels / Performances for both Intel and Silicon machines

Feb 4, 2025 4:26 AM in response to dialabrain

Very many thanks for the assurance and I'll go ahead and upgrade at some stage.... after a memory udgrade.

Looking at what you recommended re upgrading my RAM I'm concerned about compatability.

I note many suggest mac sales.com/OWC but they're US-based and don't appear to ship to UK???

Crucial don't stock any RAM for my model iMac.

Are there any recommedations for suppliers in UK? Clearly I need to get fully compatible RAM

Many Thanks


Feb 4, 2025 4:35 AM in response to Tony T

Free Shipping via US Postal Service (USPS): This option is available on select lightweight orders $79.00 & up. This service is available to all 50 US States and US Territories.


Discounted international shipping rates start as low as $2.99, where available.


https://eshop.macsales.com/shop/shipping#:~:text=This%20service%20is%20available%20to,Purolator%20International%3A%20PuroPost%20shipping%20method.


Feb 5, 2025 1:06 AM in response to dialabrain

Hi, I'd like a bit more advice relating to this topic which has spun off into upgrading the RAM in my iMac.RAM with its mere 8GB.

I've ordered a couple and want some advice as to how to best position them into the two remaining slots.

Reason for asking is after reading about potential performance and even system crashing issues on the forum pages. [see attachement and https://discussions.apple.com/thread/251662474?sortBy=rank] and also some footage at https://www.youtube.com/watch?v=jojJb9I_krI&t=229s&ab_channel=9to5Mac

Clearly I need to get this right so... advice please?

Many thanks.

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Can I update my iMac to macOS Sequoia?

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