Don't Dead Mac OS
After successfully created a macOS bootable USB, the next step is how to use it to install macOS from external USB drive. This is not normal case because macOS is very stable and have less bugs/virus than Windows PC. So many Mac users don't know how to perform a clean install of macOS on their Mac when the device was broken or could not boot into desktop.
There are a number of ways this can happen. One common cause is a dead or dying battery in those Macs that use PRAM, which is a small-button style battery in the Mac. Another cause is your Mac freezing or temporarily losing power in the middle of a software update.
'Don't Steal Mac OS X.kext, sometimes referred to as DSMOS or DSMOSX, is a file present in Intel-capable versions of the Mac OS X operating system which enforces a form of Digital Rights Management, preventing Mac OS X being installed on stock PCs. A Sad Mac is an icon used by older-generation Apple Macintosh computers (using the Old World ROM since the original Macintosh 128K),1 to indicate that a severe hardware or software problem has prevented startup from occurring successfully. The Sad Mac icon was displayed on a black screen, along with a set of hexadecimal codes that indicated the type of problem at startup. Different codes.
Please don't worry. We will share detailed steps on how to install macOS/Mac OS X from an USB drive. Even you had issues during this process, it is not thing to be afriad as we have offered the troubleshooting guide as well.
How to Install macOS on Mac from USB Drive (Normal Way)
If the target Mac computer already had a macOS or OS X on it, then installing macOS from USB is straightforward and this is called the normal way.
Step 1: Insert the macOS bootable USB drive on a USB port of Mac computer.
Step 2: Shut down the Mac and wait for 1-2 minutes. This will make sure the Mac is powered off.
Step 3: Hold the Power and Option key simultaneously for 15 seconds. This will bring up the Startup Manager on Mac.
Step 4: You will see all bootable devices attached to this Mac, including Macintosh HD and external USB or DVD. Click the drive name of your macOS bootable USB to start the installation process.
Step 5: Agree the terms and conditions and wait for the installation process to be done.
How to Install macOS on Mac from USB Drive (Advanced)
If the drive was not partitioned or the partition table was corrupted, then you can not install macOS on Mac with the normal way. You have to boot Mac into Recovery mode and format the hard drive or SSD to Apple file system first.
Step 1: Shut down your Mac and press the Power key to turn on the Mac; then immediately press Command and R keys.
Step 2: You will be directed to the macOS utility section and here you need to select 'Disk Utility' to format the USB drive. From the Disk Utility app, select Mac drive name under Internal section and then click on the 'Erase' button.
Step 3: You will get a couple of options from the Format. Pleasec choose APFS (macOS) or Mac OS Extended (Journaled) for old version Mac OS X.
Step 4: After the completion of the formatting process, go back to the macOS utility section and this time, select 'Reinstall macOS'.
Step 5: Further, go to the Startup Manager, move to the External drive section, and select your bootable macOS USB drive.
Step 6: Now, the configuration of MacOS will start. As soon as the process starts, it will provide Terms and Agreement page and your job is to agree with the same and then click on the continue button.
Step 7: After that, click on the 'Continue' button to start the installation process. This will take 30-45 minutes and once it gets completed, restart Mac.
Step 8: As you are using the fresh copy of MacOS on Mac machine, so you need to set up the OS and for that connect the Mac with the Wi-Fi and then sign in with the Apple account.
Step 9: After signing in, you can access the several products of Apple such as iCloud, DropBox and many more.
Quick Troubleshooting Tips if You Got Stuck during MacOS Installation
Could not write installation information to disk
If you see the message like 'Could Not Write Installation Information to Disk' when you are trying to install the OS, it means, some important files are missing from the bootable USB device. Mostly, this error happens when you download Mac OS file from an unauthorized site.
You can fix this issue just by downloading the original OS file from the Apple store and then create a fresh bootable USB using the same.
Compatibility error
If you are upgrading the OS X after having an older version, you can get the compatibility error message. In such case, just cross-check the system requirement for the OS you want to install on your Mac system.
You can fix this issue just by downloading the original OS file from the Apple store and then create a fresh bootable USB using the same.
macOS could not be installed on your Computer
If you see the error message similar to 'macOS Could Not Be Installed on Your Computer' that means, either your system is not compatible or the Date and Time settings in your system is not up to date..
To resolve the problem, first, check the system combability for the OS X. If it's fine and still you are facing the error, then just update the system Time & Date with the option of 'Local Apple time server'.
Application is damaged, can't be used to install macOS
You the message 'application is damaged, can't be used to install macOS' appear on your screen, it means the OS certificated has been expired. And so, you won't be able to proceed further for installation.
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The simple solution is; you need to create a fresh bootable USB by downloading the MacOS file from its official website.
MacOS couldn't install on this computer
Sometimes, the thirty-party tool which you use to create a bootable USB is the culprit. If the OS files will not be copied successfully using the bootable tool, then you may see the message like 'MacOS couldn't install on this computer'.
In this case, you should avoid using a third party bootable tool despite you should create a bootable USB with the help of command.
Conclusion
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The above tutorial covers most of the issues you could come across during the installation process. If you had other issues not mentioned in this article, please contact us and our technical team will help you fix it.
Upgrading your Macbook is a very easy task if you are already running a previous version of Mac OS X. You just need to download the new OS Installer from the App Store and after that, it’s just like a normal installer setup. But the problem comes, when your Mac OS got corrupted and you need to install a clean setup without having to access the App Store.
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Arguably, Mac OS is a more stable and reliable OS as compared to Windows. It crashes less and gets fewer malware attacks as compared to windows. Therefore there are very few documentations regarding clean installation for Mac OS relative to Windows Reinstallation.
In this tutorial, I would try to cover up as much detail I could to help you Reinstall a Clean Mac OS on to your Macbook or iMac. I recommend you to use 16GB or higher USB drive. Also, make sure to backup all your files and data before you initiate the setup.
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Step One: Download macOS Installer files
You can download the Mac OS Installer file from App Store. Or, if you don’t find the required OS on the App Store, then you can download the Mac OS Installer files from ISORIVER.
Step Two: Formatting Your USB Flash Drive
You can create a boot installer for macOS on Mac. If you are using a flash drive that already has data, be sure to back up all important files as you are about to erase everything in an instant.
Open search engine. Go to Applications > Utilities and open Disk Utility. You should see your flash drive in the External section of the left panel. After selecting it, click on the “Erase” button at the top.
Choose a descriptive name (which you will use later) and be sure to select Mac OS Extended (Journaled) for this format. Finally, click on Erase and you will be done with this step.
Step Three: Creating a Bootable USB Using DiskMaker X
DiskMaker X is a user-friendly and reliable software for creating a bootable macOS USB disk. You can download DiskMaker X for free.
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After Installing DiskMaker X, you need to change security permissions for the app to work without breaking.
Navigate to System Preferences > Security & Privacy > Privacy > Accessibility. To make changes, click the lock icon at the bottom and enter your credentials.
Then click on the Plus button, navigate to the Applications folder, select DiskMaker X, and click open. DiskMaker X should now appear on the list.
As soon as you start DiskMaker X, you will be asked to confirm the download of the macOS installer.
The following message shows one of the advantages of DiskMaker X, as it is possible to create multiple installation disks. This means that you can create multiple partitions on the USB drive and have different macOS installers for each partition.
If you prefer to create an installation disk, select “Erase all disk“. Finally, confirm that you want to delete the entire contents of the USB drive.
DiskMaker will continue to create the disk in the background and update it while it works. After a few minutes, DiskMaker X will inform you that your startup disk is ready and will give you some instructions on how to use it.
Step Four: Booting Your Mac From a USB Drive
Simply connect the USB drive you created to an open USB port on your Mac. Turn on the system or restart it if it is already on. Immediately press and hold the Option (Alt) key on the keyboard when it starts.
You should now see an option to select the USB drive as a boot disk. Once selected, the system will start from the USB drive and will be directed to the macOS utility screen.
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That’s it for the tutorial If you face any issues or had any query then please let us know in the comment section below. You can also send us an email via the contact us page for personalized support.
Don't Dead Mac OS