![]() (USB 2.0 and large capacity drives will take longer.) After the format completes, the partition will be mounted under “/Volumes/Sierra” (or whatever name you selected above). The format operation may take several minutes to complete.Click the “Erase” button in the warning popup dialog if you get one. Click the “Erase…” button at the bottom.Select “Master Boot Record” for “Scheme”.Select “Mac OS Extended (Journaled)” for “Format”.Input a name like “Sierra” (this name will be overwritten later).Click on the “Erase” tab (or button at the top).On the left-hand pane, select the USB drive (not the partition under it, if any).Plug the USB flash drive into your Mac.Because I am paranoid, I recommend reformatting the USB flash drive manually anyhow.įormat the USB flash drive using these steps: This is because the script we run to create the bootable drive will reformat the flash drive as an initial step. Note: If the flash drive is mounted under “/Volumes” successfully when you plug it in, you can skip the following steps to reformat the flash drive. The macOS Sierra installer takes up 5.1GB of space on the USB flash drive, so you will need a flash drive with a capacity of 8GB or greater. # hdiutil: verify: checksum of "/Applications/Install macOS Sierra.app/Contents/SharedSupport/InstallESD.dmg" is VALID # If successful, the last output line should read: Hdiutil verify /Applications /Install\ macOS\ Sierra.app /Contents /SharedSupport /InstallESD.dmg Launch the “Terminal” application and run this command to move the downloaded installer to your user’s “Downloads” folder: ![]() To keep that file, you will want to move it out of the Applications folder so it won’t be deleted after an upgrade. Note: If you run the macOS Sierra installer to upgrade your Mac, the downloaded file will be deleted automatically after the upgrade is completed. It will save the installer as an “/Applications/Install macOS Sierra.app” file (about 4.97GB in size). Run the “App Store” application, search for “macOS Sierra”, and download it. The macOS Sierra installer is available from the Mac App Store. The best advice for installing macOS Sierra is to try again and be very patient (if you expect an operation to complete in 5 minutes, then give it at least 50 minutes). Note: The macOS Sierra Disk Utility and installer appears to be more buggy and much slower than previous versions. Below are the steps I took to create the bootable USB flash drive and how I used it to install macOS Sierra. However, if you can’t run it on your device, this is the second best.To perform a clean installation of macOS Sierra (basically, Mac OS X 10.12), I recommend using a bootable USB flash drive containing the macOS Sierra installer. ![]() Mojave, the newest version of MacOS, brought even more improved features to the table. ![]() If you’re running Sierra on your Mac, you will be able to run this one as well. Many other discreet changes happened all over the system. It went through a total revamp both visually in its interface and terms of tools and functions available. The most noticeable changes took place in Apple’s Photo App, though. There are also notification controls, and you will experience a boost in performance, too. The users can now control annoying auto-play videos, prevent tracking, and more. They added support for virtual reality headsets as well.īesides that, when it comes to Safari, Mac search engine, there are some notable improvements with the update. These formats compress data - that’s a benefit as files can get huge with ever-rising resolutions. Thus, it boosts performance and helps manage device memory issues.Īpple also introduced new formats for video and photos in this version. It enables the storage and encryption of a large number of files. The Apple file system is the most significant feature it brought. There are few bells and whistles, but the changes are noticeable and positive. High Sierra emphasizes the already-existing benefits of MacOS previous system, Sierra. In essence, High Sierra took what was good with Sierra and developed it into a more comprehensive software.
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