Clean install mountain lion from another mac

Also, just a quick comment: Does this method not work with the The USB boots but the install fails immediately. However, when I try to actually boot from the thumb drive via pressing alt key during startup , I get to choose which drive to boot from, I select the USB and then it tries to load. And the nothing happens, I need to force-reboot….

I have the same problem. After restart, the system never give me a chance to boot from USB at all. Can any one please give me help. I am so tired now, have been trying and getting stressed now. Please please help! Great tip! I was able to get a Mountain Lion image onto a thumb drive, and will use it for future.

OK… so I made a bootable flash drive with the installer. Now, I need to move that bootable image to an SD card so I can reclaim my thumb drive.

How to Perform a Clean Install of OS X Lion on Your Mac

Can someone explain how I might accomplish this? Hi all. Can anyone help? Thanks a lot! I was searching to reinstall the OS for last 2years but could never do that. Just reinstalled every time. With the same apps coming automatically! But your advice helped a lot… But I just wonder that why apple wants its users to be so computer savvy?

Create a clean install on an internal or external drive

Anyway, thanks to you buddy! There are pink lines thought my screen… When I boot from the usb blue lines show through out the screen. An old article for sure, but really useful and worked perfectly! Name required. Mail will not be published required. All Rights Reserved. Reproduction without explicit permission is prohibited.

Enter your email address below: Posted by: Marcos says: February 17, at 4: Christopher says: February 17, at 6: Gaymerguy says: November 12, at 2: Pedro says: Armin says: February 17, at 7: February 18, at 9: Aaron says: February 17, at 8: February 18, at 1: DeeN says: February 18, at 2: July 26, at 7: February 18, at 7: Paul says: February 18, at Albert says: February 19, at 6: Yousif Anwar says: February 19, at June 14, at 4: Mauro says: February 20, at 9: Jazz Bansal says: February 20, at 4: UT says: February 20, at 6: April 9, at 1: May 11, at 5: July 20, at 9: February 21, at 1: Mike Foust says: April 9, at 8: Claudio says: July 26, at 5: Martin says: February 25, at 1: Vito says: February 27, at 1: Will says: If you never changed its name, the startup volume will be listed as Macintosh HD.

Be sure to select the volume name and not the device name, which will usually be the name of the physical drive, for instance, " GB WDC WD5. You can give the startup drive a name, or use the default name. Click the Erase button. You'll be asked if you are sure you want to erase the drive.

Click Erase. The Install OS X window will open. Click Continue. A sheet will drop down, informing you that your computer's eligibility will be verified before you can download and restore OS X. This happens because the bootable media we created doesn't contain all of the files necessary for the install. The installer will check for any missing or new files it needs, download the files from Apple's servers, and then start the installation process.

Read through the license, and click the Agree button. You'll need to click the Agree button a second time, just to make sure you really agree with the license and didn't accidentally click the Agree button the first time. The installer will display a list of drives that you can install Mountain Lion on. Select the target drive the startup drive you erased in the steps above , and click the Install button. The installer will check the Mac App Store for updates and any other files it needs. After your Mac reboots, a progress bar will display the time remaining in the installation.

This will vary, depending on the Mac, but it should be relatively short, less than 30 minutes in most cases. When the progress bar hits zero, your Mac will automatically restart. After restarting, your Mac will start the system setup process, including creating an administrator account, creating an iCloud account if you want one , and setting up the Find My Mac service if you choose to use it. The Welcome screen will display. Select your country from the list, and click Continue.

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  2. Should you do a "clean install" of Mountain Lion?.
  3. How to Clean Install OS X Mountain Lion.

Select your keyboard layout from the list, and click Continue. You can choose to transfer user data, applications, and other information from another Mac, PC, or hard drive; you can also choose not to transfer data now.

I recommend selecting the Not Now option. You can always transfer data later using the Migration Assistant included with the OS. This lets you ensure that your Mac is up and running with Mountain Lion without any issues before you spend the long time it takes to transfer data. Make your selection and click Continue. This feature allows your apps to figure out your approximate location and then use that data for various purposes, ranging from mapping to advertising. You can enable location services at any time, so you don't have to decide now.

Make your selection, and click Continue. The installer will ask for your Apple ID.

How to Install Mac OS X Lion Using Target Disk Mode

You can skip this step if you wish, but if you supply the information now, the installer will pre-configure iTunes, the Mac App Store, and iCloud. It will also pull account information you have provided in the past to make the registration process easier. Make your selection, and click Skip or Continue. I checked and my Macbook Pro Mid and it is compatible with Sierra.

Your Answer

I don't know why i don't see Sierra as an option. I get an error.

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Posted on Jul 15, 9: Jul 15, As per this article: Newer Mac computers and some older Mac computers automatically try to start up from macOS Recovery over the Internet when unable to start up from the built-in recovery system. When that happens, you see a spinning globe instead of an Apple logo during startup. If you still can't start up from macOS Recovery, and you have a Mac that is able to start up completely, you might be able to create an external Mac startup disk to start up from instead.

Apple does not use the terminology "clean install". There is erase and reinstall or just reinstall:. To create a standalone installer on a USB flash drive or similar removable media, refer to the following instructions: Create a bootable installer for macOS - Apple Support.

Mac OSX Lion How to do a Clean Install

Select the following line by dragging your cursor from just prior to the word sudo to past the word volume:. Go to the Terminal window, paste that line into the Terminal window, and type a space character. Stop right there; do not press Return. This is an example of what should happen. The name of the USB drive is "untitled" in the following:. Then press Return.