Gatekeeper looks for a “signature” in an application this is a sort of certificate that is included in an application, and it tells Mountain Lion where the application came from. GatekeeperĪnother essential security feature in Mountain Lion is Gatekeeper, a technology that prevents certain applications from being installed on a Mac. Threats using these types of elements are theoretically prevented from doing anything outside the boundaries of the web browser. Sandboxing is not only important because of the possibility of a user unwittingly installing a Trojan horse, but also to prevent threats that come through web pages: Java, Flash, QuickTime and others. Any application you use that creates or edits files can only access files it creates, or files that you expressly import to that application’s space. If you use an iPhone or iPad, you can see this. A set of restrictions prevents the application from accessing files it doesn’t need, and a set of “entitlements” allows the application to access certain files or folders. When an application runs in a sandbox, its rights are limited.
Os x mountain lion full#
But if the application is malware – such as a Trojan horse that a user mistakenly installed – then it has full rights to do anything it wants. If the application is buggy, it may alter or delete essential files. If you are, applications have more rights than if you have a standard user account.) Even if an application doesn’t need to access certain system files, it still has the right to do so. (This depends on whether you are running an administrator’s account or not. Without sandboxing, any application can read and write files almost anywhere on your Mac. In computer security, sandboxing is similar any application you run is in a “sandbox” that prevents it from going beyond certain boundaries and performing actions that it shouldn’t. A traditional sandbox has boundaries that allows kids to play within a certain space. One of Mountain Lion’s marquee security features is called sandboxing. Here’s an overview of the new or changed security features in Mountain Lion: Sandboxing
Os x mountain lion mac os x#
What interests us here, however, is the numerous security features that have been added to Mountain Lion or that have been changed since Mac OS X 10.7 Lion. Mountain Lion includes a number of new features and brings to OS X many facets and ideas that Apple uses in iOS, the operating system that runs the iPhone, iPad and iPod touch. Today Apple released OS X 10.8 Mountain Lion, the latest version of the operating system that runs Macs. Thank you for using Apple Support Communities.Apple + Recommended + Security News New Security Features in OS X Mountain Lion Click Continue and follow the onscreen instructions to reinstall OS X.If you’re not connected to the Internet, choose a network from the Wi-Fi menu.After the drive is erased, close the Disk Utility window.Type a name for your disk, then click Erase. From the Format pop-up menu, select Mac OS Extended (Journaled).If you want to securely erase the drive, click Security Options.Select the indented volume name of your startup disk from the left side of the Disk Utility window, then click the Erase tab.When the Recovery window appears, select Disk Utility then click Continue.Immediately hold down the Command (⌘) and R keys after you hear the startup sound to start up in OS X Recovery. Before you begin, make sure your Mac is connected to the Internet.This section of the following article will help you get that drive erased and formatted properly so you can continue with the installation:
Os x mountain lion install#
That indicates to me that the drive has not yet been formatted as Mac OS Extended Journaled, so it is not ready for Lion to install onto it. From what you describe it sounds like you are trying to install Lion on your newly installed HDD replacement but its not showing as a disk when you try to actually install Mac OS X.