Jul 24, 2017  This article describes several ways to free-up space on your Mac so that you can increase available space on your computer: Related: Mac OS X: What is “other” storage and how to remove 1.Determine how much disk space you have Open Disk Utility (Finder Applications Utilities Disk Utility), then click your disk then. May 08, 2011  How to force a Hard Drive to unmount for formatting in Mac OS X Disk Utility - Duration: 6:11. Gemsbok Apple Tips and Tricks 263,589 views. On Mac OS X this message is issued when running applications that were not downloaded from the Mac app store. Note that you can also change the system preferences to allow opening specific applications anyway. In this case, the warning message is not issued. Click Yes to. Aug 13, 2018  The DMG one can go since you don’t need it anymore. First, eject the DMG by right-clicking it and selecting the “Eject” command, or by pressing the eject button next to the disk in finder. This unmounts the DMG file from your system. Next, delete the DMG file itself unless you have a reason for keeping it around.

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If your Mac says that the file is in use

  1. Quit any app that you were using with the file, then empty the Trash.
  2. If that doesn't work, the app might have one or more background processes that are using the file. Restart your Mac, then empty the Trash.
  3. If that doesn't work, you might have a startup item or login item that is using the file. To temporarily prevent such items from opening automatically, start up in safe mode by holding down the Shift key while your Mac starts up. Then empty the Trash and restart your Mac normally.

If you can't delete the file for other reasons

  1. Start up from macOS Recovery by holding down Command-R while your Mac starts up.
  2. When the macOS Utilities window appears, select Disk Utility and click Continue.
  3. In Disk Utility, select the disk that contains the file that you want to delete. Then use the First Aid feature of Disk Utility to repair that disk.
  4. Quit Disk Utility, then restart your Mac and empty the Trash.

With quite 65 million users—consumers, scientists, animators, developers, system administrators, and more—OS X is the most generally used UNIX® desktop operating system. Additionally, OS X is that the only UNIX environment that natively runs Microsoft Office, Adobe Photoshop, and thousands of other consumer applications—all side by side with traditional command-line UNIX applications.

Tight integration with hardware—from the sleek MacBook Air to the powerful Mac Pro—makes OS X the platform of choice for an emerging generation of power users.

This document explores the powerful industry standards and breakthrough innovations within the core technologies that power Apple’s industry-leading user experiences. We walk you through the whole software stack, from firmware and kernel to iCloud and developer tools, to assist you to understand the various things OS X does for you each time you employ your Mac.

Overview of Mac OS X Mountain Lion 10.8 ISO & DMG Image


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The OS X kernel is predicated on FreeBSD and Mach 3.0 and features an extensible architecture supported well-defined kernel programming interfaces (KPIs). OS X was the primary OS to ship as one install that would boot into either a 32-bit or 64-bit kernel, either of which could run 32-bit and 64-bit applications at the full native performance. Starting with a cougar, OS X exclusively uses a 64-bit kernel, but it continues to run both 32-bit and 64-bit applications.

To do this, I/O Kit provides the following:

  • An object-oriented framework implementing common behavior shared among all

drivers and kinds (families) of drivers

  • Many families of drivers for developers to create upon
  • Threading, communication, and data-management primitives for handling issues

related to multiprocessing, task control, and I/O-transfers

  • A strong, efficient match-and-load mechanism that scales well to all or any bus types
  • The I/O Registry, a database that tracks instantiated objects (such as driver instances)

Mac os x 10.10 yosemite free download dmg. and provides information about them

  • The I/O Catalog, a database of all I/O Kit classes available on a system
  • A group of device interfaces—a plug-in mechanism that permits applications and other

software outside the kernel to speak with drivers

  • Excellent overall performance
  • Support for arbitrarily complex layering of client and provider objects

Address Space Layout Randomization (ASLR)

Many malware exploits believe fixed locations for well-known system functions. To mitigate that risk, cougar randomly relocates the kernel, kexts, and system frameworks at system boot. This protection is out there for both 32-bit and 64-bit processes.

Recovery partitions

OS X Lion introduced a replacement Recovery HD partition that has the tools you would like to do the following

  • Reinstall OS X
  • Repair a tough drive
  • Restore from a machine backup
  • Launch Safari to look at the documentation and search the web
  • Create Recovery HD partition on external drives.

Core Storage

Layered between the whole-disk partition scheme and therefore the filing system used for a specific partition may be a new logical volume format referred to as Core Storage, introduced in OS X Lion. Especially, Core Storage allows in-place transformations like backgrounding the full-disk encryption used by Filevault 2.

File systems

Partitions are typically formatted using some variant of the HFS Plus filing system, which provides fast Btree-based lookups, robust aliases, and rich metadata—including fine-grained access controls and extended attributes. Since OS X 10.3 Panther, every Mac has used a journaled version of HFS Plus (HFSJ) to enhance data reliability. Since OS X 10.6 ounce, HFS Plus has automatically compressed files.

You can also prefer to format partitions with HFSX, a case-sensitive variant of HFS Plus intended for compatibility with UNIX software. For interoperability with Windows, systems disks could also be formatted with FAT32 or exFAT.


The kernel replaces the complex web of init, Cron, Xinetd, and /etc/RC wont to launch and manage processes on traditional UNIX systems. Launched first appeared in OS X 10.4 Tiger. it’s available as open-source under the Apache license.

File-based configuration

Each job managed by launched has its own configuration to enter a typical launched. list(5) file format, which specifies the working directory, environment variables, timeout, Bonjour registration, etc. These lists are often installed independently in the standard OS X library domains (for example, /Network/Library,/System/Library/Library, or ~/Library), avoiding the necessity to edit system-wide configuration scripts. Jobs and lists also can be manually managed by the launch command-line tool.

Smart scheduling

Like traditional UNIX Cron jobs, launched jobs are often scheduled for specific calendar dates with the StartCalendarInterval key, also as at generic intervals via the StartInterval key. If the pc sleeps through multiple intervals, those events are going to coalesce into a single trigger.

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Also Read:-Mac OS X Leopard 10.5 ISO/DMG Download Free

System Requirements of the Mac OS X Mountain Lion

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  • Minimum RAM requirement of 2GB.
  • Free Hard Disk Drive of 8GB.
  • Intel Multi-Core processor.

Download Mac OS X Mountain Lion 10.8 ISO & DMG Image

You can download the Microsoft Office 2000 Professional full version for Windows by accessing the link below. Also, make sure that you have enough back up before you proceed with the same. There are a lot of duplicate ISO images on the market and it is best to download the same from a trusted source.