Macbooks or iMacs hardly require reinstallation of their Mac OS, but when they do then it’s a fairly difficult process especially if your secondary computer is Windows. Reinstalling Mac OS is a time-consuming process and requires a lot of patience that’s why recommend doing this process in your free time or weekends.
To get started with you require a USB drive with at least 8GB storage (16GB recommended). Then you need a working Mac OS ISO or DMG Installation Image. You can download it from the Apps Store or you can find Mac OS Image at ISORIVER.
First, Download macOS From The Mac App Store To begin, you need the installer for whatever version of macOS you want on a thumb drive. Head to the Mac App Store. If what you’re looking for is the latest version of macOS, search for that operating system and click the “Download” or “Install” button. Just connect the USB disk and press the Option/Alt Key when you hear the boot sound. The Mac will then display all the startup disks available. Pick the USB drive with the label “Install macOS Mojave or High Sierra” and follow on-screen instructions to complete the installation.
There are 2 Methods to Create a Bootable USB drive of Mac OS on your Windows PC.
Another disk image utility that you can use is PowerISO. It can be used for burning both ISO files and DMG files to USB to create a bootable drive. Follow the steps below to Create a Bootable Mac OS USB on Windows PC.
Step 1: Firstly Download PowerISO and install it in your Windows PC. Launch the app and insert a USB drive into your computer.
Step 2: Import the DMG / ISO file directly by clicking on ‘Burn’ in the toolbar.
Step 3: In the Burn window, select the DMG / ISO file from the Source File section.
Step 4: You can modify the settings to adjust burn speed. The default will be set to the maximum, so you can reduce that.
Step 5: Mac keyboard alternative. You can choose to finalize the disk and verify it. Any errors in the bootable USB will show up at that point.
Step 6: Now click on “Burn” and wait for the progress bar to reach 100%.
After the successful creation of Bootable Mac OS USB, boot your Macbook from this USB drive by clicking the option button during bootup and select this USB drive.
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.
Those who still rely on older Mac OS X operating systems, know these still are going strong. There are so many things you can do with past OS X — like Lion, Mavericks or Yosemite — each one of these operates flawlessly. So if you’re looking to give your Mac a fresh start with just a classic Mac OS X and nothing else, to clean install Mac OS from USB is the best option for you.
To clean install Mac OS from USB, there are three things you should do. First, you should clean up your Mac from the old baggage — system files that have piled up over time. Once it’s all cleaned up, the next you should do is backup your newly cleaned Mac. And finally, after doing a backup, you can clean install OS X of your choice from USB.
We’ve got the steps outlined below, so let’s get to it.
Whatever OS X you are currently on, system junk and outdated cache files are a potential source for software conflicts. Having cleaned them up, you may discover around 35 GB of newly created space previously taken by junk. What's more, old caches may interfere with your new Mac OS X installation, so this step is pretty essential.
Cleaning can be done either manually or using a dedicated app. If you don’t want to spend the next 20 minutes on repetitive clicking and typing, jump right to the automatic solution further down.
Note: Do not remove the folders themselves, just their insides.
Next off, do the same steps, but now replace.
~/Library/Caches with… /Library/Caches
There are many nice apps that offer a quick Mac clean up. Among those, CleanMyMac 3 is our favorite as it looks most user-friendly of all. It scans your hard drive for old caches, broken apps, and app leftovers so you can remove all unwanted files in a minute or two. After all, a newly installed OS X feels better on a clean computer.
Download CleanMyMac and then follow the steps:
And you’re done. If you want to clean up more junk on your Mac, go through each of the modules located on the left panel of the app. It’ll help you clear out gigabytes of junk that you probably didn’t even realize were there. Once you’ve finished the cleanup, head to the next step.
Before you begin to reinstall Mac OS from USB, you should back up your Mac. Note: If you don’t do this step, you will not be able to recover files, nor restore anything if something goes wrong. To back up your Mac: Excel for mac trial.
You will need 3 essential things:
Once it’s all prepared, it’s time to clean install OS X. But first, you need to create a bootable drive using a USB containing Mac OS X of your choice. Don’t know how? Then read on.
1. Connect your Mac to the USB flash drive. It should have at least 12 GB of available storage.
2. Open Terminal from the Utilities folder of your Applications folder.
3. Type or paste the following commands in Terminal:
Mavericks:
Free slot games to download. Yosemite:
El Capitan:
4. Press Return.
5. Type your administrator password and press Return.
6. When prompted, type Y to confirm that you want to erase the volume and press Return. You'll see the progress as the bootable installer is created.
7. Quit Terminal when the process is finished.
1. Plug in your bootable USB drive and Restart your Mac while holding the Option key. Make sure to keep it pressed down!
2. When it restarts, you’ll have a few options. Choose your USB Installer.
3. Next, select the Disk Utility option.
4. In the window, at the top of the left bar, select your Mac’s Main Drive.
5. Next, to the First Aid button at the top, click the Erase button.
6. Now, near the center of the window, select the Format drop-down list and select “Mac OS X Extended (Journaled)” as the type.
7. Click Erase (this will erase your main drive) and allow time for the drive to format.
8. When it’s finished, close out DiskUtility and select “Install OS X” from the menu.
Spartacus gladiator of rome. 9. Select your main drive and install a new OS X on it.
Follow the installation prompts and enjoy your new operating system. And if you want your new OS works smoothly for a long time to come, use a great cleaning and maintenance tool we've mentioned above — CleanMyMac 3. The app will take care of your Mac, so you'll get the most out of your computer again. Try it now!
These might also interest you:
0 
Star