Luckily I was able to recover most my lost files with Disk Drill Media Recovery after buying it on the App Store, there just was no other way of getting my files back. But I like learned the hard way today why backups are important, when my Usb Drive that had a lot of needed Mac programs and many downloaded games stored on it became unreadable on my Mac and then Windows wanted to format it. I had no Idea my MacBook was not Natively Supported, and I have not done a upgrade before I always stuck with what ever came on my Mac. Use USB installer to install High Sierra.ĩ. Use USB installer Disk Utility to format SSD.Ĩ. ![]() Make USB bootable installer of High Sierra on flash drive, with the appropriate version that supports your unsupported 2009 MBP.ĥ. Backup your most important data somewhere else too.Ĥ. Just don't erase the HD before you remove it.ģ. The good news about installing an SSD is that once you remove the HD, you automatically have a backup already. And yes, it's always best to have MULTIPLE backups before any such process. Personally I would recommend a clean install anyway, but that would require you re-installing all your downloaded software. Is it even possible to do an in-place upgrade from El Capitan to High Sierra on an unsupported machine? I'm not sure. High Sierra + 8 GB + hard drive = painful High Sierra + 4 GB + hard drive = painful ![]() SSD is mandatory though, even more so than memory. Sierra offers no advantages over High Sierra, not even performance.
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