Could run the simulator and build to my phone running iOS. Choose the install disk and click ‘install’ (it won’t actually install yet!). Easily install Catalina, Mojave or High Sierra. Hello, does anyone have this kernel panic problem when using R8 with iMac Pro(10. 4 HFS+ Raid-0,trim enabled, very zippy indeed, boot times from power button to desktop took 33. Question: Q: Download original High Sierra 10. i've used SuperDuper to cloned Sierra 10. That's obviously a different scenario than what you have, but as the software RAID is handled at a higher level than the OS, I think you should be fine.