What happens when you reset the PRAM on a Mac?

When you reset the PRAM or NVRAM, your computer restores the default settings for your hardware and sets the internal hard drive as the startup disk. Performing a reset requires you to shut down your computer. While booting, hold down the “Command-Option-P-R” keys immediately after you turn on your computer.

What does a PRAM reset fix?

For music production, resetting the PRAM/NVRAM will reset information that deals with start-up disks and device connections such as MIDI devices and audio interfaces. You can see where your Mac’s RAM is being allocated to in the Activity Monitor app (Finder > Utilities > Activity Monitor).

How do I factory reset my Mac G5?

How to Reset a Power Mac G5

  1. Turn the computer off by selecting “Shut Down” from the Apple menu.
  2. Turn the computer back on via the “Power” switch.
  3. Hold down the “Command” key (the key near the space bar with an Apple pictured on it) while simultaneously holding down the “Option,” “P” and “R” keys.

How do I factory reset my 2005 iMac?

After the iMac shuts down completely but before it begins to restart, hold down the Command (⌘) and R keys at the same time. The Mac will display the macOS Utilities menu, from which you can reinstall Mac OS.

How do I factory reset my Mac desktop with Windows keyboard?

To restore from a Time Machine backup. On a Windows keyboard, the Windows key is equivalent to the Mac keyboard’s Command key. So if you’re using a Windows keyboard, restart your Mac and then hold down the Windows key + R key combination to boot into Recovery Mode. Alternatively, use a Terminal command.

Does resetting PRAM speed up Mac?

PRAM reset is one of the first things that you can do to improve system performance and clear out potential issues. Resetting your PRAM clears out caches on your logic board that can sometime be responsible for a sluggish system.

How do you do a hard reset on an iMac?

How to Force Restart Your Mac. Press and hold down the Command (⌘) and Control (Ctrl) keys along with the power button (or the ‌Touch ID‌ / Eject button, depending on the Mac model) until the screen goes blank and the machine restarts.

How do I wipe my iMac and start over?

Choose Apple menu > Restart, then immediately press and hold Command-R. In the Recovery app window, select Disk Utility, then click Continue. In Disk Utility, select the volume you want to erase in the sidebar, then click Erase in the toolbar.