How to convert a hard drive from HFS+ to APFS

Recently, Apple introduced its new file system called APFS (Apple File System). This brand new file system is designed for use on SSD disks, but there’s nothing wrong with using it on usual hard disks. The easiest way to format the disc is by using macOS built-in Disk Utility app. Let’s get started.

How to fix: The volume can't be ejected because it's currently in use (for regular users)

After working with an external hard drive (further simply - disk) I want to cleanly unmount it. But to my surprise when pressing the ‘eject’ button Finder warns me with the following error message:

How to download a complete macOS High Sierra installer app

Recently my sister asked me to reinstall the macOS High Sierra on her iMac because it stopped working correctly. I thought that it would be easy to do but I was mistaken. I successfully installed the macOS Mountain Lion (when using the NetBoot it automatically selects the version of macOS with which the iMac was shipped with). But then I was facing multiple issues trying to update macOS from Mountain Lion to High Sierra via the Mac App Store.

How to fix: The volume can't be ejected because it's currently in use

After working with an external hard drive (further simply - disk) I want to cleanly unmount it. But to my surprise when pressing the ‘eject’ button Finder warns me with the following error messages:

The volume can't be ejected because it's currently in use.

How to fix: fatal: Authentication failed for https://github.com/

After enabling a two-factor authentication in my GitHub account, when I run the Git git push command it throws the following error message:

$ git push
Username for 'https://github.com': Username
Password for 'https://Username@github.com':
remote: Invalid username or password.
fatal: Authentication failed for 'https://github.com/username/repository.git/'