macOS 15 Sequoia on Unsupported Macs Thread

[MacinMan]

For those of you who do a multi boot setup using APFS Volumes on one drive, in which order do you usually do your installations? Supported OS first, and than OCLP installs, or OCLP installs first and then supported OS?

I went back to Monterey, because I observed installing the software for my epson printer, and scanner had strange install slow downs under OCLP vs supported OS, even though everything seemed to work in the end, i went back to the supported OS to make sure things keep working, and then there is the issue of the older software I use that prefer older versions of macOS for best performance. So with this in mind, would it be better to keep. Monterey as the main install with OCLP installs secondary?

 

[sdds]

So, if you boot holding down Option key, to get to system boot drive picker, select EFI disk to get to OC boot picker. You need to press Shift+Enter when selecting the target OCLP macOS in the OC boot picker to boot Safe mode in target OC macOS.

Here‘s what I tried:
1) Power on -> otion key down to get to the boot drive picker which is presenting me the following options:

2) when from here I select either one of the EFI boot optons (internal or USB drive containing the Sequoia installer) using shift-enter the boot process hangs (early on, progress bar barely moves)
3) when I choose internal EFI boot I get to Install Sequoia option which starts normally
4) when I choose the USB EFI boot I first get an error (see below) then it continues and starts the Sequoia installer from USB (or at least I think it does)

5) either way I can‘t get past the macos recovery Apple ID login because there‘s no internet connection

This is what I get in the WiFi menu

And this is what I get when I want to join other network and show networks there

As mentioned earlier, entering the SSID manually or using an Ethernet connection doesn‘t connect me either.

So, is there a way to reinstall Sequoia without having to enter the Apple ID?

Addendum:
- I‘ve already reset NVRAM at one point after the first futile attempts to recover
- I do have a TM backup from my OCLP Sequoia setup. I did a network boot at one point only to find out from there I only get to choose from my earlier, Monterey based, backups…

 

[Bmld]

Hello, on my Imac 2012 sequoia I lost color on app, the desk screen came blacK and everything Is slow. I do a new Post-install root path and then all is correct. Do you know why I lost the conf.
I have the same problem on an Imac 2015.
thank

 

[Pachnes]

Apple yesterday did seed Sequoia 15.6 Beta.

 

[MacinMan]

Hey all, to follow up from the question I posted yesterday regarding dual booting, and installation order of operating systems. I have basically found that I need both an older and a newer version of macOS together, not one, or the other.

I was really wanting to know if anyone had suggestions on the cleanest, and easiest way of doing this. I did check my fully support copy of VMware Fusion which is 13.5.2, and it lists macOS 14, as the latest officially supported version.

Here is what I've found that will most likely work best for me:

The supported OS for full GPU and System level stuff such as drivers (so there are no permissions modified), and older software that runs better on older versions of macOS vs newer.
the Patched OS for everything else.

 

[roronl]

Here‘s what I tried:
1) Power on -> otion key down to get to the boot drive picker which is presenting me the following options:
View attachment 2521028
2) when from here I select either one of the EFI boot optons (internal or USB drive containing the Sequoia installer) using shift-enter the boot process hangs (early on, progress bar barely moves)
3) when I choose internal EFI boot I get to Install Sequoia option which starts normally
4) when I choose the USB EFI boot I first get an error (see below) then it continues and starts the Sequoia installer from USB (or at least I think it does)
View attachment 2521034
5) either way I can‘t get past the macos recovery Apple ID login because there‘s no internet connection
View attachment 2521036

This is what I get in the WiFi menu
View attachment 2521037
And this is what I get when I want to join other network and show networks there
View attachment 2521038

As mentioned earlier, entering the SSID manually or using an Ethernet connection doesn‘t connect me either.

So, is there a way to reinstall Sequoia without having to enter the Apple ID?

Addendum:
- I‘ve already reset NVRAM at one point after the first futile attempts to recover
- I do have a TM backup from my OCLP Sequoia setup. I did a network boot at one point only to find out from there I only get to choose from my earlier, Monterey based, backups…

Use an ethernet-cable for internetacces.

 

[sdds]

Use an ethernet-cable for internetacces.

I did but still don‘t get past entering my Apple ID (the password field never apperars, the „ball“ next to the ID never stops spinning). From the status LEDs of my USB ethernet adapter suggest there is a connection, my router also shows there is a device connected (also it keeps count of RX and TX data amounts which indicates that there is some, if ony little, few MB per minute, data is exchanged between the two).
View attachment 2521093

I‘d like to avoid having to reformat the whole thing, which seems the only option so far that I can get to without hitting a brick wall…

 

[Bigwaff]

either way I can‘t get past the macos recovery Apple ID login because there‘s no internet connection

So, is there a way to reinstall Sequoia without having to enter the Apple ID?

No. This activation lock screen.

 

[houser]

I‘d like to avoid having to reformat the whole thing, which seems the only option so far that I can get to without hitting a brick wall…

The options you were given were not to reformat anything, just reinstall in place without erasing or reformatting anything.

 

[sdds]

No. This activation lock screen.

Lesson learned: I‘ll disable this on my MBP when it is up and running again. Is Activation Lock know to not play nicely with OCLP or am I just unlucky to have been the exeption?

 

[sdds]

The options you were given were not to reformat anything, just reinstall in place without erasing or reformatting anything.

Yes, thanks to all for the help! Unfortunately all these options led to a brick wall in my case, so I guess I‘l have to bite the bullet and reformat/install from scratch…

 

[Meddvedd]

Hi Guys!
I've decided to upgrade my MacBook Pro 11,3 A1398 Mid2014 i7 16Gb RAM, 1TB Original SSD
What would be better for me - Sonoma or Sequoia?
What is more stable and faster?
Sorry if it's off-topic

 

[TOM1211]

Hi Guys!
I've decided to upgrade my MacBook Pro 11,3 A1398 Mid2014 i7 16Gb RAM, 1TB Original SSD
What would be better for me - Sonoma or Sequoia?
What is more stable and faster?
Sorry if it's off-topic

Sequoia runs fine for me same specs apart from Nvme drive fitted. will have to use Firefox instead of safari. Best option? Install them both on separate partitions and test drive them to see which one fits your needs .

 

[Bigwaff]

Lesson learned: I‘ll disable this on my MBP when it is up and running again. Is Activation Lock know to not play nicely with OCLP or am I just unlucky to have been the exeption?

Just use ethernet. Activation Lock need to connect to Apple activation service to unlock Mac. Obviously, you need the Apple Account password. Alternative is to sign into iCloud w/ Apple Id and remove device from the account, although this may require device to be wiped remotely. If you don't have the Apple Account password, you're toast.

 

[sdds]

Just use ethernet. Activation Lock need to connect to Apple activation service to unlock Mac. Obviously, you need the Apple Account password. Alternative is to sign into iCloud w/ Apple Id and remove device from the account, although this may require device to be wiped remotely. If you don't have the Apple Account password, you're toast.

That is the part that doen’t work at all in my case: Even with Ethernet I never get further than entering my ID. The password prompt never appears (see the the attachment of post #3557). It‘y my primary device so of course I have my password ad all..

 

[Meddvedd]

Sequoia runs fine for me same specs apart from Nvme drive fitted. will have to use Firefox instead of safari. Best option? Install them both on separate partitions and test drive them to see which one fits your needs .

This is probably the right way, but too complicated.
When I updated from El Capitan to Big Sur my MBP got a little slower.
Is Sonoma or Sequoia slower than the Big Sur? And which is faster?