ahha Posted March 14, 2015 Share Posted March 14, 2015 Hi!It's not a topic about Hackintosh but I don't know where to ask, so. How to limit SATA speed on MacBook Pro Late 2011 to 3 Gbps? It is currently 6 Gbps and it seems works not OK, because my SSD have very strange speed benchmarks: from 200 Megabytes/s write speed to 6 Megabytes/s. Most of time it works very slow, and I don't know what to do. Link to comment https://www.insanelymac.com/forum/topic/305059-macbook-pro-late-2011-limit-sata-speed/ Share on other sites More sharing options...
bronxteck Posted March 14, 2015 Share Posted March 14, 2015 maybe you should check with your SSD's manufacturer to see if there is a new firmware for it which might correct your issues. Link to comment https://www.insanelymac.com/forum/topic/305059-macbook-pro-late-2011-limit-sata-speed/#findComment-2119853 Share on other sites More sharing options...
ahha Posted March 14, 2015 Author Share Posted March 14, 2015 maybe you should check with your SSD's manufacturer to see if there is a new firmware for it which might correct your issues. Its model is End of Life, I already asked them, no further support and no fixes (10.8 was the latest os where it works correct). I even don't know where is the problem, just trying different ways to solve. Link to comment https://www.insanelymac.com/forum/topic/305059-macbook-pro-late-2011-limit-sata-speed/#findComment-2119856 Share on other sites More sharing options...
bronxteck Posted March 14, 2015 Share Posted March 14, 2015 you can try enabling trim with the trim enabler app but i think it has issues in yosemite and cause a kernel panic on boot. you would have to backup the IOAHCIBlockStorage.kext it alters just in case you have to put it back it is located in System/Library/Extensions/IOAHCIFamily.kext/Contents/Plugins/IOAHCIBlockStorage.kext. or to make it simpler back up the whole IOAHCIFamily.kext if it does KP you would probably have to remove the drive to add it back on a different machine running OS X. I'm not sure if it's worth all the hassle though. unless it works for you. Link to comment https://www.insanelymac.com/forum/topic/305059-macbook-pro-late-2011-limit-sata-speed/#findComment-2119860 Share on other sites More sharing options...
ahha Posted March 14, 2015 Author Share Posted March 14, 2015 you can try enabling trim with the trim enabler app but i think it has issues in yosemite and cause a kernel panic on boot. you would have to backup the IOAHCIBlockStorage.kext it alters just in case you have to put it back it is located in System/Library/Extensions/IOAHCIFamily.kext/Contents/Plugins/IOAHCIBlockStorage.kext. or to make it simpler back up the whole IOAHCIFamily.kext if it does KP you would probably have to remove the drive to add it back on a different machine running OS X. I'm not sure if it's worth all the hassle though. unless it works for you. Enabling TRIM causes beach balls and data corruption on previous OS X versions and total system hang on 10.10 (even disabling TRIM can't restore the system, only format and reinstall). Link to comment https://www.insanelymac.com/forum/topic/305059-macbook-pro-late-2011-limit-sata-speed/#findComment-2119866 Share on other sites More sharing options...
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