macOS 10.13 "High Sierra" (from the Californian CDP of the same name) is the fourteenth version of the macOS operating system developed by Apple Inc., the second to be called "macOS" instead of "OS X". It was officially presented to the public by Craig Federighi on June 5, 2017 in San Francisco, during the Apple WWDC. The first developer beta was released on the same day as the presentation. It focuses on incorporating new technologies and improving existing features. Especially the Photo and Safari applications have undergone significant changes. The name "High Sierra" refers to the highest region of the Sierra Nevada, a mountain range in California. As with Snow Leopard, Mountain Lion and El Capitan the naming indicates the refinement of its predecessor, focusing on performance improvements and technical updates rather than adding features.
Apple File System
Apple File System (APFS) replaces HFS Plus as the default file system in macOS. It is designed to take full advantage of the new SSD flash memory, with native 64-bit support, greater responsiveness and built-in encryption.
Metal, Apple's low-level graphics API has been updated to Metal 2. New features include native support for virtual reality and machine learning, as well as support for external GPUs.
MacOS High Sierra adds support for the highly efficient processing video codec (HEVC or H.265), with hardware acceleration where available, as well as support for the High Efficiency Image File Format (HEIF) image file format. Macs with the Intel Kaby Lake processor offer hardware support for hardware decoding 10-bit core 10 profiles, those with the Intel Skylake processor support the core 8-bit decoding profile, and those with AMD Radeon 400 Series Grapichs also support the complete decoding.
The new formats will allow compression up to 40% higher than the previous standard (H.264).
Thanks to the new security measures, kernel extensions will require explicit user approval before they can be run.
MacOS High Sierra offers the Photos application a partial redesign with a new and more complete sidebar (list of albums, photos in chronological order of import) and new organization tools (improved selection, new search filters). The People section has been enhanced; moreover, for those who have activated the iCloud Photo Library, it allows synchronization between devices.
Editing tools are also improved, with the addition of curves to adjust the contrast, professional filters and noise reduction options in images. From the Mac App Store, then, you can download extensions to integrate new editing and creation features. Any changes to the photo made in another program will now be saved in the original image in Photos.
Support for Live Photos has also been improved with the ability to choose a different key photo, crop them and delete their audio. Also added "bounce", "loop" and "long exposure" video effects.
Finally, the Memories function has been enhanced by integrating 10 new categories: pets, children, outdoor activities, shows, weddings, birthdays and sporting events.
Safari integrates a new Intelligent Tracking Prevention feature, which uses machine learning to prevent advertisers and third party sites from tracking user actions.
Safari blocks automatic playback of videos and audios on websites by default. The "reader mode", then, can be enabled to be always active. The new Favorites management also allows you to select a specific self-playback behavior, reader mode, content blocking, zoom and localization, different for each page.
Finally, Safari has further boosted its speed, resulting in the fastest in the benchmark analysis carried out at the time of release . The HTML5 video player has been redesigned to ensure the best performance and battery life for playback on Netflix.
The Notes application allows the user to add multiple tables to a note. A note can also be pinned to the top of the list.
The ability to share files directly from the Finder is introduced, generating a specific shareable URL. iCloud now allows sharing your data plan with your family.
5 giugno 2017
OS X 10.7.5 or higher
At least 4 GB of RAM
At least 16 GB of hard disk space
No changes or patches added.
Once you have downloaded all the parts that make up the file:
Verify that all the files that make up the multi-volume RAR archive are located in the same folder
Right click on the archive file with the lowest number (eg xxxx_Mondo-Tech.part01.rar) and select the item Extract files from the context menu.
In the window that appears, then indicate the path where you want to save the file once it has been assembled and extracted (using the Destination Path field at the top ) and click on the OK button, to start the procedure.
Next, you will find the file that was contained in the archive in the location you indicated above.
Finally I suggest you read our article on how to install Mac OS from usb
This version of Mac OS is designed to work only and exclusively on Apple machines!