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macOS 15 Sequoia on Unsupported Macs Thread

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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.
houser said:
Another tip on something I came across a long time ago that stuck: to create and name your own EFI partition. In my case basically a 200mb or so FAT16 partition named OCLP that I install the OCLP EFI to.
I started doing it for multi boot with win and linux, where it is a necessity but works great for any OCLP Mac for constant visibility and mounted access to your OCLP EFI. Works for me, YMMV.
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I am thinking about this and will probably give it a try, I may have questions. On the internal HD I have Monterey with no OCLP, on the SSD I have OCLP and Seq, is that where I should put the partition or the internal disc. Thanks for another suggestion. I will try to be careful because everything is working so well right now.
 
ronton3 said:
I am thinking about this and will probably give it a try, I may have questions. On the internal HD I have Monterey with no OCLP, on the SSD I have OCLP and Seq, is that where I should put the partition or the internal disc. Thanks for another suggestion. I will try to be careful because everything is working so well right now.
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Well I'd say if it ain't broken..;)
..but if you want to go ahead and do this, move slowly and carry a big sword.
Or just be careful, have backups and know what you are doing.
The long term advantage for me is easy access to purge or edit your OCLP files and to leave the factory EFI for another OS. If that is not important to you, don't touch it and especially without backups and time on your hands.
Good luck regardless.
 
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houser said:
Well I'd say if it ain't broken..;)
..but if you want to go ahead and do this, move slowly and carry a big sword.
Or just be careful, have backups and know what you are doing.
The long term advantage for me is easy access to purge or edit your OCLP files and to leave the factory EFI for another OS. If that is not important to you, don't touch it and especially without backups and time on your hands.
Good luck regardless.
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Thank you for the cogent assessment, I am starting to learn more about several things and I will proceed very cautiously. I do have a couple of backups that I have used several times.:)
 
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MNissen said:
I found something that may be of interest.

I have Monterey on a SATA SSD in bay 1, Sequoia 15.1 on a SATA SSD in bay 4 and Win11 on a NVME on a PCIe card.

Now using OCLP 2.1.2 and each OS is working pretty well, but I was getting the occasional freeze as I reconfigured things.

I looked the crash reports, to be sent to Apple and I saw Kernel Panics on "something NVME something..."

I didn't know what to do, so I left DCS world running on the Win11 on the NVME and went out shopping and I came back and it was still running. Not much fuel left in the Jet, but still flying.

So I reason, crashes happening in Sequoia and Monterey to do with NVME. The NVME/PCIe was in slot 4, so I moved it to slot 2, for reason: change is as good as a rest.

I'll report back if it's stable.
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I mentioned I'd report back if it's stable - vis:

I moved the NVME SSD on the PCIe card from slot 4 to slot 2 for no other reason, than it might change things a bit, to prevent the occasional freeze.

In doing so, I found two things, I noticed that the heat sink on the NVME had a very fine transparent plastic layer, which on removal was obviously a protective cover, like you get on new cellphones/iwatches etc, so I took it off.

And secondly the new position in slot 2 puts the NVME card right above a fan of the RX590 giving it a big arse personal cooling fan.

I haven't had freeze since and I've done some terabyte sized back ups, so I reckon that heat might have been a problem for the NVME SSD and now it's ... wait for it... cool...

😃
 
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Anyone else experienced the following issue and solved it?

Every time I boot up or restart my Mac I get the "You shut down your computer because of a problem" message when I've done nothing of the sort.

Running latest version of OCLP on a 2013 Mac Pro - clean install - only did it a couple of days ago. It's only a minor irritation but I'd like to fix it if possible.
 
Steve-L said:
Anyone else experienced the following issue and solved it?

Every time I boot up or restart my Mac I get the "You shut down your computer because of a problem" message when I've done nothing of the sort.

Running latest version of OCLP on a 2013 Mac Pro - clean install - only did it a couple of days ago. It's only a minor irritation but I'd like to fix it if possible.
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I have had it several times it seems to go away, and I am not sure why, but I assume you have reset NVRAM and SMC.
 
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Finally installed Sequoia 15.1 / OCLP 2.1.2 on the internal SSD of my MBP11,1. After much testing on external SSD.
It will be my work and travel companion for at least another year.

Thank you OCLP developers for the professional work.
 

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Steve-L said:
Thanks - Onyx did indeed fix it just by running a scan so I'll keep that installed for future use!

I've only been a Mac user for less than a week so this stuff is all new to me. Thanks again.
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I've been a Mac user since the first little green Imac's came out and there is still new stuff, it never stops.
 
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Steve-L said:
Anyone else experienced the following issue and solved it?

Every time I boot up or restart my Mac I get the "You shut down your computer because of a problem" message when I've done nothing of the sort.

Running latest version of OCLP on a 2013 Mac Pro - clean install - only did it a couple of days ago. It's only a minor irritation but I'd like to fix it if possible.
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Most likely you are using at least 2 user accounts. If you see this message, log in to the Admin account the next time FIRST and reject the message. It won't appear again the next time you log in to another user account.
 
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jsangil said:
Any news with bookmark synchronization and Poor Network Connection in photos?

regards.
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Last time I asked, the word was downgrade to Sonoma if that is important to you.
I kinda did, or rather I always maintain separate stable and work in progress partitions and have gone back to Sonoma as main again for these reasons. Only serious Sequoia reason for me is the extra year or so before EOS. An added bonus is not having to opt out of "AI" (yes I know it is Apple Silicon only but still;).
 
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houser said:
Last time I asked, the word was downgrade to Sonoma if that is important to you.
I kinda did, or rather I always maintain separate stable and work in progress partitions and have gone back to Sonoma as main again for these reasons. Only serious Sequoia reason for me is the extra year or so before EOS. An added bonus is not having to opt out of "AI" (yes I know it is Apple Silicon only but still;).
Click to expand...
It's strange that there isn't a solution already. The bookmark synchronization problem is related to the "Poor Network Connection" error in the photos application.

We will have to wait :)

Thank you also for your response.
 
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jsangil said:
It's strange that there isn't a solution already. The bookmark synchronization problem is related to the "Poor Network Connection" error in the photos application.

We will have to wait :)

Thank you also for your response.
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You're welcome.
I would like to add that, the fact that there will be some roadblocks is not strange but expected ;)

As I understand it and from my own humble experience, there are also some changes in Sequoia that impact speed and reliability networking also over ethernet in some other scenarios regardless, and might require a new wifi I/O dongle to get around and stay as secure as you can....afford . We'll see how difficult that is at some point..

Meanwhile, see Sonoma Wireless solutions that do not require OCLP as an example.
 
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Mirroring an announcement from the Discord server

it appears that Safari 18.2's JavaScript JIT requires AVX, so please avoid installing macOS 15.2 or any Safari updates on Ventura/Sonoma if you have a pre-Sandy Bridge CPU. if you've already updated and are seeing crashes, launchctl setenv JSC_useJIT false; launchctl setenv __XPC_JSC_useJIT false may allow Safari/Music/App Store to launch, but performance will be drastically reduced. we are investigating further; please be patient.
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OCLP 2.2.0n works so far on the MBP 14.3 with update, but after the post install with the KDK it hangs and the T1 chip cannot be activated. I suspect it has something to do with the PatcherSupportPkg. Will this error be fixed in 15.2 beta or will the beta no longer work with the MBP?
 
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