I think I can be certain, when I say that if you click "download", that High Sierra will download. Things happen sometimes when doing a major system upgrade, and you need to be sure that you have a way back, just in case your upgrade "goes south" on you. My suggestion, more than at any other time with OS X, is to be sure that you have a full backup before you upgrade. It's all part of the fun of High Sierra, and probably not a big issue for the normal user. The SSD file system will be converted to the new APFS, and will NOT be visible if, for some reason, you boot to a system older than Sierra. Then, back up the downloaded installer (still in your Applications folder) to an external drive, in case you need it again soon.įinally, when you are sure you have a working bootable installer, delete the installer app from your Applications folder (unless you don't mind having an app that you don't use take up more than 5GB space on your boot drive )īTW, upgrading to High Sierra on a retina WILL screw up your system, at least in one way. Once you have a bootable installer made, test it to make sure it will actually boot. I see that 8GB are getting to be less common, and the 16GB are cheap - less than $10. Just Quit the app, and continue on with creating a bootable installer.Ī 16GB USB flash drive is ideal - but 8GB size will work fine, too. The installer app will automatically launch when the download finishes. It's more than 5GB, so will take a few minutes. If the button says "Download", then click on that, and wait. Proceed to make a bootable installer! You are ready. Look in your Applications folder for the app "Install macOS High Sierra". If the top header button says "Install", then you already have High Sierra downloaded. So, the normal way to proceed (and I have done this a dozen times, just for High Sierra):įrom the Featured tab, go to the High Sierra page, either from Quick Links, or click on the macOS High Sierra icon to open the High Sierra page.Ĭlick the Download button. This is inaccurate, it still is a full upgrade, and not just an update to Sierra. Some may say that because there's not so much in visible changes from Sierra to HS, then you only have to update. Let me assure you - if you upgrade from Sierra to High Sierra (or upgrade from some older version of OS X to High Sierra), then you, at some point, will download exactly what you want - a full installer. I suspect that if I just tried to upgrade from Sierra to High Sierra, that I wouldn't be able to grab the actual full copy of High Sierra and make an installer out of it.Ĭan someone help me figure out how to do this?Īlso, I'd prefer downloading it and making an installer on my old MacBook Pro with Mountain Lion, that was if I screw anything up, I don't break my Retina! Instead, I want to download a full copy of High Sierra, so that I can then build an "installer" so I will have the ability to install High Sierra as much as I want.įWIW, I am trying to learn more about macOS and I want to install it, do some things, uninstall it, then reinstall it, and so on. I do not want to just upgrade my Retina from Sierra to High Sierra. Now I would like to get a copy of High Sierra, but maybe not in the way you think. I have an MacBook Pro with Mountain Lion and a new-ish Retina with was nice enough to help me figure out how to download a copy of Sierra in this thread.
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