Apple Certified Support Professional (ACSP) Practice Exam

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What does the Command R do during the OSX reboot process?

Initiates a clean installation

Accesses the OSX Recovery system

When you press Command R during the reboot process of macOS, it accesses the macOS Recovery system. This special mode allows users to perform various recovery tasks without needing to access the operating system itself. The Recovery system provides options for reinstalling macOS, restoring from a Time Machine backup, checking the disk for issues using Disk Utility, and accessing terminal commands for advanced troubleshooting.

While a clean installation is possible from the Recovery system, the Command R combination specifically does not initiate that process directly, nor does it manage hardware configurations or upgrade EFI firmware. These tasks would need different procedures or commands outside of the basic recovery access. Therefore, the primary function of Command R in this context is to bring users into the macOS Recovery environment, empowering them to repair or reinstall their operating system as needed.

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Manages hardware configurations

Upgrades the EFI firmware

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