5/10/2023 0 Comments Macbook pro startup timeIf you are running Mojave or High Siera natively, you might need a old version of OSX available to boot up and re-run the above installers to re-apply the firmware updates. It doesn’t matter for me as I’m using OpenCore Legacy Patcher to boot Big Sur so the firmware version shows as 999.999.999.999. One thing I’m not sure about is the firmware version the above link will restore? Firmware updates are important for anyone who is running High Sierra or Mojave (the latest one being 144.0.0.0) but I can’t tell what version this CD applied. I had exactly the same issue with my 4,1 flashed as a 5,1 taking minutes to get a boot chime (fans going to take off mode and sometimes never booting, then once reaching the chime no other issues in OSX).įor the benefit of anyone viewing this later, I was running a non-EFI GPU so I had to re-install the old GT 120 I kept in the loft to apply the process described here. Has anyone got any thank you so much, I didn’t even know Apple provided a means to restore firmware from CD. Startup Manager gives the user control of their Mac by displaying a list of non-apple apps that might be slowing down production. Originally this machine was 2 x 6 core 2.93. I had the CPU's upgraded to 2 x 6 core 3.46. 2 Select the startup disk with the operating system you want to use, then. It makes me nervous though because there is obviously some issue there, probably with the firmware or hardware and I find it difficult to get on with work knowing that there's a problem which may start manifesting in other ways. 1 Restart your Mac and hold down the Option key until disk icons appear onscreen. So I've got a Mac Pro that can take 10 minutes plus to get to the point where there's a start up chime, but once it's running, there appears to be no issues. When you first turn on your Mac, the screen is black and you hear a startup sound if your Mac is from early 2016 and earlier. Other people with the same GPU get the same error and their systems are fine.ĭone NV Ram reset, SMC reset, Logic board battery replacment. I restored the upgraded RAM, GPU, SSD etc, and the behaviour didn't change, however AHD did pick up on a PCIe temp sensor error - on researching this it seems this is a false lead and simply due to my third party GPU sending back unexpected readings. It froze a couple of times on the initial hardware probe but passed with no errors twice, but the start up issue still persists. I made an apple hardware diagnostics USB stick for this model. I've stripped the mac down removing all third party bits, replaced updated graphics card with the original, tried the stock ram (completely different set), disconnected all hard drives and PCIe cards. Sometimes there will be a long wait - followed by the case fan ramping up to full RPM (alarming) then the start up chime and a normal boot. When it's running - everything seems fine, but my Mac Pro takes an age to do the self test, sometimes it doesn't start at all after 10 - 15 minutes.
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