OS X Mavericks on mid-2015 rMBP

ashryver16

macrumors newbie
Original poster
Sep 13, 2018
5
2
Italy
Hi everyone, since I like the older ui design more and had some time to spare I started wondering if I could get Mavericks on my mid-2015 rMBP as it has nearly the same specs as the mid-2014 rMBP. I installed Mavericks from my 2011 iMac to an external drive and after tinkering around and removing some Intel kexts and PlatformSupport.plist I managed to get my rMBP to boot OS X Mavericks from the external USB drive successfully to the desktop, but with the following issues:

- Resolution stuck at 2880x1800 and GPU not recognised (obviously since I had to remove the AppleIntelHD* and AppleIntelF* kexts to avoid being stuck at "missing bluetooth controller transport" at startup)

- Keyboard and mouse are recognised only as basic generic input devices (so no trackpad functionality besides click and track and no function keys working)

- No wifi or bluetooth

- No sound

Do you guys think it could be possible to get it all up and running nicely since it's so similar to the 2014 model according to Mactracker?
IMG_5168.jpeg
 
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chrfr

macrumors G3
Jul 11, 2009
8,193
2,523
Hi everyone, since I like the older ui design more and had some time to spare I started wondering if I could get Mavericks on my mid-2015 rMBP as it has nearly the same specs as the mid-2014 rMBP.
The 2014 and 2015 MacBook Pro computers are very different, and you're not going to get Mavericks running on the 2015. 2015 gained the force touch trackpads and they're a completely different chipset than the 2014 computers.
 

ashryver16

macrumors newbie
Original poster
Sep 13, 2018
5
2
Italy
they seemed to have nearly the same specs according to mactracker. I knew about the trackpad but not the chipset, no worries it was just a spare time fun project anyway I'll consider where I got a success :D
 

Avenged110

macrumors 6502a
Aug 2, 2010
500
356
Greatest Country on Earth
That'd be pretty sweet if you (or anyone) could get this working. I am pretty dug-in on Mavericks (also for the beautiful design) so I always love seeing it run on unsupported hardware. As far as I know, the only differences are the trackpad and discrete GPU so I always figured that would be the easiest unsupported machine to get 10.9 running on.

The dream would be to get Mavericks running on Broadwell and install it on a 13" early-2015 rMBP, then hack a non-force touch trackpad into it. If only...
 
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ashryver16

macrumors newbie
Original poster
Sep 13, 2018
5
2
Italy
According to mactracker the only differences are the trackpad, a faster flash storage and the discrete gpu. Mine is a baseline 2.2GHz with the Iris Pro 5200 only so that’s why I tried getting it on, seems really similar to the 2014. But i have no idea how to get kexts working so im stuck there. And seems the chipset is different? Maybe someone more skilled than me could get it to work, would be really cool indeed.
[doublepost=1537250271][/doublepost]I forgot to point out that yes the resolution is stuck at 2880x1800, but only when the os is fully booted. For some reason while booting (white screen with Apple logo and spinning gear) the retina display seems to be recognized, even with the kexts deleted, and displays everything correctly making it look like 1440x900 (stock retina settings for the 15 inch models). I think this is really interesting.
 
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R2FX

macrumors regular
Mar 25, 2010
126
81
not really unfortunately - while CPU's might be same generations, there is different chipset on the motherboard...due to my tinkering with eGPU I know that Thunderbolt 2 has very different implementation on your machine than it has on my mid 2014 MBP 15" despite being the same connector

it's quite an achievement to get this far I'd say ;)
 
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ashryver16

macrumors newbie
Original poster
Sep 13, 2018
5
2
Italy
Yea i just thought maybe since you can get it to work on older non supported hardware maybe it could be done with this model too. I’m considering a success where i got ;)
 

AnonMac50

macrumors 65816
Mar 24, 2010
1,467
271
Still interested in this? I'm thinking you'd need to mix and match with the kexts. Or maybe add the device IDs to the kexts?