Fresh install mac from usb

Select Save the home folder in a disk image and Click Delete User. Now shut down your Mac. Make sure to keep it pressed! In the next window, select the drive where you want to install High Sierra. When it is done, you get a clean drive. Follow the instruction showing in the next window, you can get a clean High Sierra. Log in to the clean High Sierra.

How to Perform a Clean Install of MacOS High Sierra

Restart your Mac and login with the old account name, then you will get a clean system with all the old user data. If you have done all installation of macOS, you must be enjoying the completely new macOS now. I believe you also want to keep your Mac clean. I must tell you there is a savior on your Mac! Its name is Dr. Empty Trash for current user but also detect remaining files after deleting apps. Duplicates are selected not only by the file name but also by their contents. Files are shown in detailed previews.

Formatting Your USB Flash Drive

Duplicates can be sorted by file type and listed in their full route for you to track. You can decide which way to clean these files; either by sending them to trash or deleting them permanently. However, you must need an intelligent app uninstaller. It came pre installed with High Sierra.

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I resold my old one running Sierra and decided it was a good move. The one thing I did not make a note of …. So the information above is really great except that I have to think if I had made the user name exactly the same I might be able to get into Time Machine. Did you set it up as a new Mac? You can open Migration Assistant and still do that, or you can reformat and reinstall your OS and go through the setup process from the beginning again if you want to do it the clean way with Setup Assistant when it first boots up.

I bit the bullet and reinstalled the original SSD that came with my mid Air in order to get the firmware update so MacOs High Sierra would install. While tedious, this worked.

How to prepare your Mac for the clean install

The bottom line is the clean install on the Aura worked flawlessly. Now Disk Utility shows the Aura as an internal drive. Go figure. All I know is everything seems to be working properly. When I try to use the standard Terminal method to create installation media it claims my installation app is invalid. This is probably because the installation app is only 4. But when I went through formatting and installing Sierra on a new partition, then downloaded the beta I only ended up with a stubby app.

Because that will not do a clean install. Running the installer off your boot disk will only upgrade the OS. I do not get it. Why not just download the macOS installer, open it, select destination disk and install? That is the easiest way. Am I missing something for which DiskMaker X is better? The following process will erase all of the data on your startup drive. This can include all your user data, music, movies, and pictures, as well as the current version of OS X installed.


  1. Complete the install in 4 easy steps!
  2. garage sale for mac trial.
  3. Introduction.

Make sure you have a current backup before proceeding. At this point in the clean install of OS X El Capitan, the two supported methods of performing a clean install are about to merge. With that step performed, we have unified the two installation processes; going forward, all steps are the same for both clean install methods. When the installation process is complete, your Mac will reboot, and the OS X El Capitan setup assistant will automatically start. If you remember when you first got your Mac, you went through a similar process.

Because you used the clean install process, your Mac, or at least the drive on which you chose to clean install OS X El Capitan, now looks and acts just like the day you first turned it on. The setup process is complete. After a few moments, you'll see the OS X El Capitan desktop, which means you're ready to start exploring the clean installation of your new OS. Share Pin Email. Tom Nelson has written hundreds of articles, tutorials, and reviews for Other World Computing and About. He is the president of Coyote Moon, Inc.

There are actually two types of clean installs you can perform. Perform the steps outlined above, when completed return here to begin the installation process. Once you finish making the bootable USB flash drive, we're ready to continue. More than likely it's already connected to your Mac, but if it isn't, you can connect it now.

Restart your Mac while holding down the option key. After a short delay, your Mac will display the OS X Startup Manager , which will display all of your bootable devices.

How to: Clean Install macOS High Sierra

This should include the bootable USB flash drive you just created. Your Mac will start up from the USB flash drive that contains the installer. This can take a bit of time, depending on the speed of the flash drive as well as the speed of your USB ports. Select the Disk Utility option, and then click the Continue button. Disk Utility will start. In the left-hand sidebar, select the volume you wish to erase. This will likely be in the Internal category and may be named Macintosh HD if you never renamed the startup drive.

Once you have the proper volume selected, click the Erase button located near the top of the Disk Utility window. A sheet will drop down, asking if you wish to erase the selected volume and offering you the opportunity to give the volume a new name. You can leave the name the same, or enter a new one. Just below the volume name field is the format to use.

How to Perform a Clean Installation of macOS Sierra - MacRumors

Disk Utility will erase and format the selected drive. Once the process is complete, you can quit Disk Utility. You will be returned to the OS X Utilities window. The installer will start, although it may take a few moments.