High Sierra an Error Occurred While Verifying Firmware

If you’re on macOS, and yous’re seeing the warning saying
macOS could non be installed on your computer
that looks like the image higher up, information technology tin can be super frustrating. But there’s no demand to panic. Curl your sleeves up to follow this guide to troubleshoot the problem on your Mac.

You may probably run across this error when reinstalling your macOS, installing updates or even just plough on your Mac. And below “macOS could not be installed on your calculator” you’re prompted with more than details, information technology could be 1 of the followings:

The path /Organization/Installation/Packages/OSinstall.mpkg appears to be missing or damaged.

Storage system verify or repair failed.

An error occurred installing macOS.

An error occur while verifying firmware.

Unable to unmount volume for repair.

Whichever yous’re experiencing, y’all’ll probably fix it with 1 or more methods below.
Read on and find how…

Try these fixes:

Important:
Before y’all go,
remove the macOS install bulldoze(if you insert one earlier) from your Mac.

Fix i: Check the Engagement & Fourth dimension are on Set up automatically

The macOS could non be installed on your reckoner error is probably acquired by the incorrect time or date on your Mac. Follow to check the engagement and fourth dimension on your Mac:

1) Hold downward
the power button
to shut downwardly your Mac. Once you do, hold downward
the power button
to turn on your Mac.

2) On your desktop, click the
System Preferencesicon.

3) Click
Date & Time.

4) Meet if the engagement and clock match your current timezone.

If it doesn’t match, click
the lock
to enable to make changes. Then set the date and fourth dimension to correct ones.

five) Tick on
Fix date and fourth dimension automatically.

And so you can try to reinstall macOS or install the updates again.

Prepare two: Reset your Mac’south NVRAM

NVRAM (nonvolatile random-access memory) is a small-scale amount of retention that your Mac uses to shop settings（similar start-up deejay selection, time zone, display resolution and so on）and access them quickly. If the starup settings stroed in NVRAM is wrong, y’all might get the macOS could non exist installed on your co mputer error. If this is the case, you can endeavor to reset your Mac’south NVRAM to solve the problem.

Here’s how yous tin do it:

1） Hold downwardly the power button to shut down your Mac. Once you practise, hold down the power push to turn on your Mac. Immediately, hold these iv keys together:
Pick,
Command,
P
and
R
for most
20 seconds.

2) When your Mac finishes starting up, yous can become to
System Preferences
to adjust whatever settings that were reset, like startup disk selection, display resolution or time zone.

And then y’all can try to reinstall macOS or install the updates again.

Fix iii: Restore from Time Machine fill-in

When you macOS stuck in macOS could non be installed on your estimator, you can boot your Mac into the
Recovery Mode
to
restore from Fourth dimension Machine.

Here’s how you lot tin practice it:

one) Hold down the power button to shut down your Mac. Once you exercise, concur down the power button to turn on your Mac. Immediately, agree downwardly the
Control
fundamental and
R
together. Release the button
when you meet the Apple logo.

    +

Your Mac will then boot into macOS Utilities. If it doesn’t, please try again.

two) Select your language and so click the continue push.

iii) SelectRestore From Time Machine Backup, thenContimue.

4) ClickGo on.

5) Select
Time Machine Backups, then Continue.

vi) Select the about recent backup, then Continue.

Wait the restore for complete. Then check if the error all the same exists.

Set 4: Run Deejay Utility’s First Aid in Rubber Mode

When there’s whatsoever fault occurring in your Mac’due south book, yous may as well receive this error. Y’all can follow this method to run the Disk Utility to check for errors and repair the volume if necessary.

Come across how:

i) Agree down the ability button to shut downwardly your Mac. In one case you practise, concord downwardly the ability button to turn on your Mac. Immediately, press the
Shift
key, your Mac volition then boot into
Prophylactic Style.

2) Log in the organisation using your credentials. Yous’ll see the login screen displaying with the
Safe Kick
graphic symbol.

three) On the Abode screen of your Mac, click
Go, and so selectUtilities.

4) Double-click
Deejay Utility.

5) Click
First Aid, then
Run
to first to check the volume for errors.

 Annotation:

a) Choose your chief HDD every bit the volume to be repaired if yous accept not simply one volumes on your Mac.

b) Click Keep if you see the prompt saying First Assistance needs to temporarily lock the kick volume.

6) First Assist will and so check the volume for errors and repair the volume if necessary.

7) One time the repair has completed, rerun the macOS update programme or the reinstall process and meet if you get out of the fault bulletin.

If unfortunately, you lot tried all the above methods, only to no avail, don’t requite up promise. Move onto our concluding solution.

Fix 5: Free up storage space on your Mac

If there’re non enough bachelor storage on your Mac for update, the error may also happen.

In this case, you tin can endeavor to complimentary up some storage space on your Mac.

Here are some tips you can try:

i)
Delete all the files that yous no longer need: you can movement those files to the Trash, and so empty the Trash. Nosotros highly recommend y’all go to the Downloads folder to await for files that you might no longer need.

2)
Move your files to an external drive.

3) You can also
endeavour a 3rd-political party tool to help you make clean your Mac, including all the duplicated files, unneeded apps and system junks. Make sure you select the safe and green tool to scan your Mac system.