First I need to work up the courage to crack my iMac and attempt a video card upgrade.and, it takes a lot since I have Cerebellar Ataxia. Not sure if a new MacBook Pro/Air/X is in my future.might attempt another hack instead.īut, given no support for 32-bit apps in Catalina, it might be a long time before I make that leap. ![]() I was in the process of trying to find a new hard drive for it (had already gotten a new battery), and reinstall with final 10.6 (re-purchased from ebay) When, I had the darn thing stolen Since until a last year, I still had a first generation MacBook Pro (core duo). I saw that there had been patches to get 10.7 or newer to install onto 32-bit hardware.which I might have tried, if I had known about it. Download The macOS High Sierra 10.13.2 update improves the stability, compatibility and security of your Mac, and is recommended for all users. I'm sure dosdude1 will come out with a patch to get Catalina onto an unsupported Mac. The alternative might be to see if 3.48's calibre-debug will run the latest python code, probably depends on whether the latest can still be run with python 2.7.though thought there were framework changes as well. I briefly looked at running from source, and found the xcode project was a for a newer version than I have.not sure what it would take to downgrade the project. (I'm pretty sure I remember you saying you're not that sort of person though.) If that's okay with you and you find yourself excited by the idea of *experimenting* with compiling calibre from source, then by all means don't let me dampen your enthusiasm and feel free to hop right by the development subforum to ask questions. There's a thread in the development subforum about this - it's been suggested that you *might* be in luck if you need 10.12 support, but 10.11 is simply utterly hopeless as Qt>=5.12.x won't compile under any circumstances. In theory, it may be possibly to compile all of Calibre from the ground up, using a full blown development environment, targeting the version of macOS you need. (As in, the thing-that-doesnt-work-on-older-macOS-releases-Qt5. This does not, not has it ever, allowed you to run Qt5 itself from source. If you have a copy of Calibre already installed, containing the binary components that don't work on older versions of macOS, you can check out the calibre source code and modify the pure python components, or run against newer versions of the pure python components. ![]() It's something being said by someone who doesn't actually know what they're talking about. Scan down the list of apps you’ve purchased or download for free (which is in order of when you downloaded them) and find the old version of macOS.What does that mean? "running from source"? Make sure you’re logged into the Mac App Store with the Apple ID you used to update to Sierra (or whichever version you want to clean install), then click Purchased in the menu bar along the top. ![]() If you’re using Sierra or earlier, we can use the same method as above, but it’s a bit harder to get the install file: Apple doesn’t offer downloads of outdated OS versions through the normal store front, and searching for ‘Sierra’ won’t find what you’re looking for. Once installation of High Sierra is complete, you can restoring apps and settings from a Time Machine backup, or download them again manually. Go back to the main menu and choose Install OS X. ![]() Select ‘Disk Utility’ and your hard drive, then click Erase. Choose to install macOS High Sierra from the drive. With the boot drive connected, start up – or restart – your Mac while holding down the
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