If you think your Mac might have a hardware issue, you can use Apple Diagnostics to help determine which hardware component might be at fault. Apple Diagnostics also suggests solutions and helps you contact Apple Support for assistance.
EFIgy is a RESTful API and client that helps Apple Mac users determine if they are running the expected EFI firmware version given their Mac hardware and OS build version. This small tool is part of the output from 'The Apple of your EFI' research by Pepijn Bruienne ( @bruienne ) and Rich Smith ( @iodboi ) released at Ekoparty #13 on September.
Prepare your Mac
Download the latest versions of free software, drivers, trial versions, installers and utilities for your EFI digital printers and productivity software. Clover EFI Bootloader can boot OS X, Windows, and Linux on Mac or PC with UEFI or BIOS firmware. Boot OS X, Windows, and Linux in UEFI or legacy mode on Mac or PC with UEFI or BIOS firmware. The EFI check utility is one of Apple's security features designed to protect your Mac's firmware from unauthorized tampering. The tool runs silently in the background every week, and you'll only notice it when you get the warning message. When you do, just follow the steps above to get rid of it.
- Shut down your Mac.
- Disconnect all external devices except keyboard, mouse, display, Ethernet connection (if applicable), and connection to AC power.
- Make sure that your Mac is on a hard, flat, stable surface with good ventilation.
Start Apple Diagnostics
Mac Efi Tool
Determine whether you're using a Mac with Apple silicon, then follow the appropriate steps:
Apple silicon
Mac Efi Password Removal Tool
- Turn on your Mac and continue to press and hold the power button as your Mac starts up.
- Release when you see the startup options window, which includes a gear icon labeled Options.
- Press Command (⌘)-D on your keyboard.
Intel processor
- Turn on your Mac, then immediately press and hold the D key on your keyboard as your Mac starts up.
- Release when you see a progress bar or you're asked to choose a language.
View the test results
Apple Diagnostics shows a progress bar while it's checking your Mac:
When testing is complete, Apple Diagnostics shows the results, including one or more reference codes. Install android sdk mac os x. Learn about Apple Diagnostics reference codes. https://downdup536.weebly.com/slots-for-android.html. How to get alexa on mac.
Mac Efi Unlock Tool
To repeat the test, click 'Run the test again' or press Command-R.
Mac Efi Unlock Tool
Jurassic world free play. To restart your Mac, click Restart or press R.
To shut down, click Shut Down or press S. Can t open xlsx file on mac.
Mac Efi Reset Tool
To get information about your service and support options, make sure that your Mac is connected to the internet, then click 'Get started' or press Command-G. Your Mac will restart to a webpage with more information. When you're done, choose Restart or Shut Down from the Apple menu.
Learn more
On an Intel-based Mac, if you can't start Apple Diagnostics with the D key, try these solutions:
- Press and hold Option-D at startup to use Apple Diagnostics over the internet.
- Make sure that your Mac isn't using a firmware password.
