naquaada Posted 3 hours ago Share Posted 3 hours ago Hello, I have a 2015 MacBookPro11,5 and a MacBookPro11,4. It's the same but without the Radeon. I've planned a huge task: Backup all my data from 20 years hackintosh and sell the old drives to data recovering companies. That's why I needed Yosemite which has the original Disk Utility. Because I'm planning mostly to do compressed disk images for backups, this is the version to go. The MPB11,4 has a 256 GB SATA SSD, the MBP11,5 has a 4 TB NVMe SSD. Both are using OCLP and working fine with Sequoia. I still have the old 512 GB original Apple NVME SSD from the 11,5, so I wanted to add it in the 11,4. I've cloned the Yosemite installation from the 11,4 to the 11,5 and it won't boot 'still waiting for root device'. I've tracked down NVMeGeneric.kext, modified the info.plist from 10.11 to 10.10 and the kext is loaded on the 11,4. I haven't transferred this version to the 11,5 yet, I want to do some more optimizations first. Has someone else made tests with NVMe on older OS X versions on real Macs? Is it possible to use OCLP for NVMe support? Is it possible to inject the NVMeGeneric.kext? Greets, naquaada. Link to comment https://www.insanelymac.com/forum/topic/362991-yosemite-on-nvme-macbook/ Share on other sites More sharing options...
LockDown Posted 2 hours ago Share Posted 2 hours ago (edited) No need for OCLP. flag it with kext-dev-mode=1 and install nvmegeneric Edited 2 hours ago by LockDown Link to comment https://www.insanelymac.com/forum/topic/362991-yosemite-on-nvme-macbook/#findComment-2852115 Share on other sites More sharing options...
naquaada Posted 1 hour ago Author Share Posted 1 hour ago Yes, I had kext-dev-mode=1 in /Library/SystemConfiguration/com.apple.boot.plist and now it's also added in NVRAM using the nvram command. Kext dev mode is activated in Yosemite, I could see it in the Kext Utility. But I still need some time until It is configured well enough to be cloned to the 11,5. Link to comment https://www.insanelymac.com/forum/topic/362991-yosemite-on-nvme-macbook/#findComment-2852116 Share on other sites More sharing options...
LockDown Posted 1 hour ago Share Posted 1 hour ago I Pm'd you earlier with the version i had success long time ago Link to comment https://www.insanelymac.com/forum/topic/362991-yosemite-on-nvme-macbook/#findComment-2852117 Share on other sites More sharing options...
naquaada Posted 6 minutes ago Author Share Posted 6 minutes ago I haven't seen it until now. The binary in your version is identical, but you have a different info.plist. Link to comment https://www.insanelymac.com/forum/topic/362991-yosemite-on-nvme-macbook/#findComment-2852118 Share on other sites More sharing options...
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