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macOS Tahoe 26 on Unsupported Macs Discussion

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The first post of this thread is a WikiPost and can be edited by anyone with the appropiate permissions. Your edits will be public.
OKonnel said:
As far as I know, within the OCLP team, @educovas deserves a special recognition for always allowing us to successfully use nNvidia graphics cards.
Praise and glory to this small but great hero who, with his skill and generosity, also honors his country!
If we really want to collaborate with the Team, let's remember to give a little financial help, from time to time, via the link on the official OCLP pages, and not just download OCLP and give a few easy "likes" :)
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So true, @OKonnel! Just completed the donation on OpenCollective…

Thanks for reminding us to donate, now more than ever!
 
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educovas said:
View attachment 2562672

Yes, we are working on Tahoe since the first beta. We are also working on Sequoia. People have no idea how long it takes to fix a single bug and these patches have many. Each major release introduces new problems because we're using old drivers and frameworks which only gets more and more problems with time.

Why would we release something to the public, even as nightly when it can't even be used properly? Why not just fix the current know problems and release when we think it's stable enough? Just to remember, there are a LOT of patches that needs work and they all have many problems for a small group to resolve. More problems than any previous macOS version.
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Questions is for me, which takes precedence?! If Intel HD4000 does the Job already…

As posted earlier, I got issues with font rendering in Safari and PDFs in Preview on NVidea Kepler. Not sure what causes the issue, as this is not a consistent behavior !
 
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educovas said:
I haven't used my my MacRumors account in a long time but i have to say something.

I'm one of the only two working on root patches for OCLP. Only two have to add suport for dozens of macs and fix patches full of bugs. We have a life, we have problems and we're not taking money from this, it's a voluntary work. Sometimes i feel like some people can't understand that we're also humans and that things takes time to get ready.
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as a poor caregiver for my bed ridden mother I REALLY appreciate the hard work you do for us! Thank you very much!
 
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I created a install USB memory for Dahoe 26.0.0 by OCLP 2.4.1, when I boot this memory, I got error as below, what happened? My mac is mac mini (3,1), Late 2009, I worked on Sequoia 15.7 without problems.
 

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So, I had posted on the Sequoia thread in response to a Tahoe comment, that I felt like after watching the latest video from Mr. Macintosh, and his OCLP update on Tahoe, and the fact that he also said he doesn't currently recommend upgrading on supported Macs yet, and then watching videos from those who have tried it on unsupported Macs, and also hearing how slow it is on supported macs currently, I just came away with the impression, it won't be worth it for older unsupported macs even less, unless you have an unsupported mac that just lost support, at Tahoe. No one gave their thoughts, so I was curious as to what people thought as a whole at this point.
 
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MacinMan said:
what people thought as a whole at this point.
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I don't see any issues on the Silicon platform. Everything works as expected.
There are issues on the latest supported Intel platform (A2141), mostly after waking up from sleep mode. Wi-Fi might not work. It might show a connection, but there's no network access. Sometimes you have to turn Wi-Fi off and then back on. In Safari, the computer might freeze. Then, there'll be a black screen, then work will resume with a message that Window Server has restarted. The Touch ID isn't working properly. It only works after about the third attempt when waking up from sleep mode. I'm sure these issues will be fixed eventually. It's not unbearable to use, just an inconvenience.
 
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Dimvol said:
I don't see any issues on the Silicon platform. Everything works as expected.
There are issues on the latest supported Intel platform (A2141), mostly after waking up from sleep mode. Wi-Fi might not work. It might show a connection, but there's no network access. Sometimes you have to turn Wi-Fi off and then back on. In Safari, the computer might freeze. Then, there'll be a black screen, then work will resume with a message that Window Server has restarted. The Touch ID isn't working properly. It only works after about the third attempt when waking up from sleep mode. I'm sure these issues will be fixed eventually. It's not unbearable to use, just an inconvenience.
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I wonder what Mr. Macintosh was referring to then, when he made his recommendations? For reference, this video:
Or, it could have been this one:
 
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Dimvol said:
There are issues on the latest supported Intel platform (A2141)
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FWIW, I have an A2141 and are not seeing the issues you mention on Tahoe 26.0.1 on that model at all so far after light general usage. Nothing to do with OCLP but still.
 
houser said:
FWIW, I have an A2141 and are not seeing the issues you mention on Tahoe 26.0.1 on that model at all so far after light general usage. Nothing to do with OCLP but still.
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Tangentially I am finding the new 26 updates to make a big difference on my Ipad Mini 6, I can now make calls as long as it is around my new Iphone Air which is a big upgrade from the 13, and the battery rumors are not a problem for me. The new 26 makes Firefox almost as good on the Ipad Mini 6 as it is on the Imac. The inference I am making is that Firefox on my experimental T26 volume is very quick, seems even quicker than on the Seq volume, perhaps wishful thinking, many of the native apps are very quirky but still work. In general I see 26 as a large overall upgrade, some of which may overlap into the 27 2015 Imac.
 
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deeveedee said:
I'm pleased with the performance of Tahoe on my test systems that don't need OCLP (all still Intel). Sequoia is still my daily go-to when I need macOS for actual work, but based on what I've observed, I'll have no qualms about upgrading to Tahoe when the time comes.
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The main difference between myself and many here is, I only have the one computer that's dependable, the iMac 17,1. So, I have to treat it as a persona, and production mac at the same time. That's why I'm trying to keep stability over bleeding edge, or even up to date. So far, I've found that having an install of Monterey (last official supported), and either Sonoma, or Sequoia as secondary, for the few updates, I actually need, seems to be a good combination. As always, I also have Linux on an external drive for things, it does better than macOS, when it comes to gaming, or giving me a standard Unix style environment, that not full of Apple's non standard stuff.

I have the MBP 11,1 but I've considered just tossing that as it needs a new battery, and I don't feel comfortable replacing the batteries other than the ones i can simply take out without having to deal with adhesive, etc. The MBP is in good condition physically, it just isn't dependable, and it needs too much work to make the cost worth it, at it's age.

So, that just leaves the iMac as my only usable computer, that's dependable.
 
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MacinMan said:
So, I had posted on the Sequoia thread in response to a Tahoe comment, that I felt like after watching the latest video from Mr. Macintosh, and his OCLP update on Tahoe, and the fact that he also said he doesn't currently recommend upgrading on supported Macs yet, and then watching videos from those who have tried it on unsupported Macs, and also hearing how slow it is on supported macs currently, I just came away with the impression, it won't be worth it for older unsupported macs even less, unless you have an unsupported mac that just lost support, at Tahoe. No one gave their thoughts, so I was curious as to what people thought as a whole at this point.
Click to expand...
I really don't know what Mr. Macintosh meant by that but I've been using Tahoe since the first developer beta on my supported Mac (sig.) without any issues at all.
The only thing worth mentioning is the lack of contrast in Safari tabs and the absence of Tab Layout in the ARM version in Tahoe. Tab Layout is still available in the Intel version of Safari 26.0.1 when running Sequoia.
 
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In addition to my OCLP Macs, I have a Macbook Air M4 on which I installed Tahoe at release day. Also did the update, when 26.0.1 (final) came out. Didn't have any issues at all and I also like the LG design. But I wouldn't say I like the maturity of Sequoia less. Some of the functionality of Tahoe is not available here in the EU, though (e.g. using iPhone calls with the Mac).
 
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macpro_mid2014 said:
I really don't know what Mr. Macintosh meant by that but I've been using Tahoe since the first developer beta on my supported Mac (sig.) without any issues at all.
The only thing worth mentioning is the lack of contrast in Safari tabs and the absence of Tab Layout in the ARM version in Tahoe. Tab Layout is still available in the Intel version of Safari 26.0.1 when running Sequoia.
Click to expand...
Come to think of it, He could have been referring to Tahoe not being good on intel Macs, and only good for Apple Silicon.
 
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T26B2/3.0.0n OTW/OTA. OCLP asks to update, now downloading KDK 25B5057f.

I had not used the test T26 volume for awhile, now the time is no longer Cupertino but correctly displayed as KC Mo., things seem much brighter.

edit: Easy update. It takes a long time to settle in but the first things I've noticed are that Icons are much better "Liquid Glassed", and the screen saver is brighter and more pronounced.
 

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MacinMan said:
Come to think of it, He could have been referring to Tahoe not being good on intel Macs, and only good for Apple Silicon.
Click to expand...
I am finding that Tahoe runs very well on Intel. Everyone will need to evaluate for themselves, since use cases and compute resources vary. I haven't watched Mr. Macintosh's videos, but his opinion is just that ... an opinion.
 
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Smooth upgrade to Tahoe 26.1 Beta 2 via OTA (full installer). Still waiting patiently for OCLP post-install patches, so not testing anything beyond the ability to login and capture this screenshot.

Screenshot 2025-10-09 at 10.48.31 AM.png


EDIT: I am running Tahoe without issues on several test systems and am finding no significant performance differences from Sequoia (Note that these test systems do not require OCLP post-install patches to run Tahoe):
  • CPU: Intel i5-8600; GPU: Radeon RX 560x dGPU 4GB RAM; System Memory: 32 GB
  • CPU: Intel i9-9900; GPU: Intel UHD 630 iGPU; System Memory: 32 GB
  • CPU: Intel i7-10610U; GPU: Intel UHD 10th Gen Intel iGPU; System Memory: 32 GB
EDIT2: To improve graphics performance in Tahoe, I enable the following in System Settings > Accessibility:
  • Reduce Transparency
  • Reduce Motion
 
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