You’ll see the prompts in the picture above as each part of the hard drive’s directory is checked.
(Checking extents overflow file, Checking catalog file, Checking multi-linked files, etc.) It will take a few minutes.
Its graphical user interface was built on top of an object-oriented GUI toolkit using the programming language.
designed to run on Apple's Macintosh computers ("Macs"). Within the market of desktop, laptop and home computers, and by web usage, it is the second most widely used desktop OS, after Microsoft Windows.
Launched in 2001 as Mac OS X, the series is the latest in the family of Macintosh operating systems.
Beginning in 2013 with OS X 10.9 Mavericks, releases have been named after landmarks in California.
Apple changed the original name "Mac OS X" to "OS X" in 2012 and then to "mac OS" in 2016, adopting the nomenclature that it uses for their other operating systems, i OS, watch OS, and tv OS.
The first desktop version, Mac OS X 10.0, followed in March 2001.
Releases were code named after big cats from the original release up until OS X 10.8 Mountain Lion.
All versions of the system released since then run exclusively on 64-bit Intel CPUs and do not support Power PC applications.
The heritage of what would become mac OS had originated at Ne XT, a company founded by Steve Jobs following his departure from Apple in 1985.
Here’s how to verify and repair your startup disk with fsck. Keep holding down those keys until you see a black screen with white lettering.