This Lion Install iso-file contains: - 760.080.920 Bytes for optional installer packages - 81.456.497 Bytes for Descriptions - an installer.app with 4.297.782 Byte NOTHING ELSE! No shared support, no installESD.dmg, OSinstall.mpkg NOTHING! Where the 7,77GB download size came from is a brainteaser of outerspace levels to me! Not worth the time.
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- There, the Mac reaches out over a Wi-Fi or ethernet connection to download the relatively modest Recovery software, which then bootstraps the download of the full macOS installer.
- Plug the external drive into the Mac that you want to install the macOS on. Start up the Mac, holding down the Option/Alt key while it is booting up. Your Mac will display the Startup Manager.
- Install Disk Creator will automatically detect your 'OS X' installer file. If you have an old installer file from El Capitan or Yosemite installed, you might have to choose 'Select the OS X installer' button, then navigate to your Applications folder and select 'Install macOS Sierra.'
Article Title = How To Obtain And Use The macOS Install Disc Image
Article Author(s) = Graham Needham (BH)
Article Created On = 21st July 2011
Article Last Updated = 10th September 2014
Article URL = https://www.macstrategy.com/article.php?43
Article Brief Description:
Instructions for obtaining the OS X install disc image
How To Obtain And Use A macOS Disc Image (for OS X 10.7 or later)
What's your situation?- You made a backup copy of the 'Install macOS / OS X' installer package before installing macOS / OS X - click here
- You are about to purchase, download and install macOS / OS X - click here
- You have purchased and downloaded macOS / OS X but have not installed it yet - click here
- You have already purchased, downloaded and installed macOS / OS X - click here
- You have already obtained the macOS / OS X disc image and want to know what to do with the macOS / OS X disc image
Obtain the macOS / OS X Installer - macOS / OS X Not Purchased Yet
- Go to Macintosh HD > Applications > App Store.
- Go to Store menu and Sign In if necessary (using the Apple ID you purchased OS X 10.7 or later with).
- From the 'Store' menu now select 'Search' and search for 'macOS'.
- Locate the latest version of macOS / OS X e.g. macOS 11 Big Sur.
- Click the 'Buy' button NOTE: If the buy button is not available e.g. it says 'Install', 'Download' or 'Purchased' you have already bought macOS / OS X
- Purchase and download the macOS / OS X Install installer package to your hard disk (it may take a while as it is 4.3GB+ in size).
- At the point where the macOS / OS X installer has downloaded it will automatically launch and ask you to continue.
- Do not click Continue yet.
- Quit the macOS / OS X installer (yes, quit it).
- Now go to Obtain The macOS / OS X Disc Image section below
Obtain the macOS / OS X Installer - macOS / OS X Already Purchased
- Go to Macintosh HD > Applications > App Store.
- Go to Store menu and Sign In if necessary (using the Apple ID you purchased OS X 10.7 or later with).
- Alt-click on the Purchases icon. This will show you a list of all software previously purchased. The 'macOS / OS X' item in the list should have an 'Install' or 'Download' button to the right of it. NOTE: If the button is greyed out e.g. it says 'Installed' or 'Downloaded' go to the macOS / OS X Already Purchased And Installed section below
- Click the install or download button for macOS / OS X which will download the macOS / OS X Install installer package to your hard disk (it may take a while as it is 4.3GB+ in size).
- At the point where the macOS / OS X installer has downloaded it will automatically launch and ask you to continue.
- Do not click Continue yet.
- Quit the macOS / OS X installer (yes, quit it).
- Now go to Obtain The macOS / OS X Disc Image section below
Obtain the macOS / OS X Installer - macOS / OS X Already Purchased And Installed
- Go to Macintosh HD > Applications and check for an 'Install macOS / OS X' item - if it exists go to the Obtain The macOS / OS X Disc Image section below otherwise continue with these instructions. NOTE: If you have an additional compatible Mac running Mac OS X 10.6.6 or later that does not have the version of macOS / OS X you want already installed on it you could use that to download the installer again otherwise you will need one of the following external storage devices before continuing with these instructions:
- USB, FireWire or Thunderbolt hard disk
- USB stick
- SDXC card (if your Mac supports it e.g. recent MacBook Pro or Mac mini)
- Restart your computer using the (Internet) Recovery mode
- When the macOS / OS X Utilities window appears select the Install macOS / OS X option
- Choose your external storage device as the destination
- Let the installation start and watch the installation process carefully (it may take a while as it is 4.3GB+ in size)
- When the Mac automatically restarts there will be a black screen for a moment - at this point unplug/eject/disconnect the external storage device
- The Mac may stall for moment but then should boot normally to your desktop or login screen
- Reattach the external storage device
- There should be a folder on it called 'macOS / OS X Install Data' that contains a disk image file called 'InstallESD.dmg' - if this is missing, then you probably waited too long to unplug the drive. Go back and start this section again
- Copy the 'InstallESD.dmg' file to your desktop or preferably to another disk/storage device or even burn it to a DVD so that you have a backup of it.
- Now choose what you want to do with the macOS / OS X disc image
Obtain The macOS / OS X Disc Image
- Go to Macintosh HD > Applications and locate the 'Install macOS / OS X version name here' installer package (e.g. 'Install macOS High Sierra') or find your backup copy of it.
- Right/control click on the 'Install macOS / OS X' installer package and select 'Show Package Contents' from the contextual menu.
- Navigate to Contents > SharedSupport and locate the 'InstallESD.dmg' file.
- Copy the 'InstallESD.dmg' file to your desktop or preferably to another disk/storage device or even burn it to a DVD so that you have a backup of it.
- Close all the windows.
- You can now use the macOS / OS X disc image (InstallESD.dmg) to:
- Create an External Installation Device.
- Create an Emergency Boot Drive for macOS / OS X / Mac OS X you can use it to boot your computer and repair your hard disk and/or reinstall macOS / OS X / Mac OS X.
- Create an Install DVD (see instructions below).
How To Create An Install DVD From The macOS / OS X Disc Image
You will need a Mac with a DVD Writer and a blank/unused, single or dual layer DVD-R or DVD+R disc (depending on the size of the disc image for the version of macOS / OS X you are burning).- Obtain the macOS / OS X Disc Image (see instructions above).
- Go to Macintosh HD > Applications > Utilities > Disk Utility.
- Click on the 'Burn' button at the top of the Disk Utility window.
- Navigate to the macOS / OS X disc image ('InstallESD.dmg' file)
- Select the disc image.
- Click the 'Burn' button.
- Insert the blank/unused DVD-R or DVD+R disc.
- Follow the on screen instructions.
Article Keywords: OS X OSX 107 108 109 1010 1011 macOS 1012 Lion Mountain Lion Mavericks Yosemite El Capitan Sierra boot bootable DVD install disc
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Apple released macOS Big Sur on November 12, 2020. macOS Big Sur continues the list of Central California landmarks as well as marks the new operating system for Mac. Those who tried it say that it's more stable. It also sports a refreshed version of Safari that is 50% faster than Chrome. Here's how to perform a clean install of macOS Big Sur with pictures and helpful tips along the way.
What is a clean install? (Big Sur or any other macOS)
A clean install means that you install the macOS onto the erased drive.
Why is clean install more preferable?
A clean install is the opposite of macOS upgrade. You format your hard drive, and therefore, it keeps no leftovers from the previous macOS.
- macOS performs faster
- You get rid of apps you don't use
- Persistent issues may go away
Basic steps to clean install macOS Big Sur
The first step is to clean and back up your Mac to some external source. Then, you'll need to download macOS Big Sur package to your Applications. Next, you'll need to create a bootable USB installer (involves another external drive). And lastly, we'll use Disk Utility to erase your Mac and install macOS Big Sur using the bootable USB device.
1. Clean & Back up your Mac
Cleanup
Cleaning your Mac is generally a healthy practice but since we're about to back your Mac up, it's worthwhile to get rid of system junk first. After we've cleaned your Mac, you'll end up with a refreshed system ready for a Time Machine backup.
Time Machine will make a snapshot of your system.But before that we'll ensure there's no unwanted leftovers on your entire Mac. To clean your machine automatically, you can run CleanMyMac X. This tool is one of the best-known cleaning utilities for Mac, and it's been notarized by Apple.
Download the free version of CleanMyMac X cleaner here.
Install the app and click on System Junk to perform the scan.
Back up your Mac
Now, you're ready to back up your computer. There is a tool built just for that purpose, you guessed it, Time Machine. Time Machine needs a storage source onto which it will copy your system.
So, you'll need an external drive. This is the first external drive that we will use to clean install macOS Big Sur. This is the reserve backup for the worst-case scenario.
- Go to System Preferences > Time Machine.
- Connect an external drive (that's more spacious than your current system).
- Select this Disk as a backup source in Time Machine.
Well done. The preliminary steps are done with, and we're ready to clean install macOS Big Sur.
2. Download macOS Big Sur installer
macOS Big Sur has been released on November 12, 2020.
Since the public release in the fall of 2020, macOS Big Sur can be downloaded from the Mac App Store. It also can be found in the Software Updates pane in System Preferences.
So you'll find it in System Preferences > Software Updates.
- Click Upgrade Now
Wait for the installer to download onto your drive. You will see the macOS Big Sur intro screen.
Don't click Continue but for now, close this window by choosing Quit Install.
We only want to make sure that the app called Install macOS Big Sur.App is now firmly sitting in your Applications.
This is the file we'll use later to run the clean install of macOS Big Sur via Disk Utility.
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Now, and only now have we come to clean installing macOS Big Sur. This is only a short stop on the road, so catch your breath, and let's move along.
3. Create a bootable Big Sur installer
Now, it's time to grab another USB flash drive and connect it to your Mac. This drive should have at least 16 GB of storage space. Anesidora 1 21.
Wipe the drive clean with Disk Utility
Avi plugin for mac.
- Pick this drive and click Erase in the top menu.
- Double-check what you're erasing.
- Make sure the USB drive is shown as 'Untitled'
- Under Format, choose: Mac OS Extended (Journaled)
All data on that disk will be lost, so beware.
Go to Terminal (Phew, we're almost there) Download internet explorer for mac 10 9 5.
This step will actually create the source disk so we can install Big Sur from bootable USB.
Launch Terminal app from your Launchpad.
Paste in the following command:
sudo /Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled
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Type in your admin password and press Return and Y to confirm the action.
This command creates a bootable USB installer based on macOS Big Sur.app, which we've previously placed in your Applications.
4. Erase your startup drive in Disk Utility
It's time to wave goodbye to your current configuration. Remember, we've already cleaned it up from junk with CleanMyMac X and backed it up onto our first reserve USB drive.
Now, start your Mac in Recovery mode:
https://hfffmf.over-blog.com/2021/01/adobe-fuse-online.html.
- Turn off your Mac and hold down Command + R.
- Choose Disk Utility from the menu.
- Choose your main startup drive and click Erase.
Voila! Your Mac is now formatted. What you can do now (actually, this the only thing you can do now) is to clean install macOS Big Sur 11 from the connected USB installer drive. If it's not connected, connect the bootable USB installer now.
- Go back to the original Disk Utility screen
(If you can't return to Disk Utility, restart your Mac and hold down the Option key) - Click Install macOS and choose to install it from the selected USB drive.
- Click on 'Install macOS'
How do I regularly install macOS Big Sur?
The regular install is done via upgrading your current macOS. That is, you don't erase your entire disk. When the new macOS Big Sur is officially released, you just open the App Store > Updates.
Or even better, go to your System Preferences > Software Updates
How to reinstall macOS Big Sur?
Can't Find A Disk To Install OS X Lion - Apple Community
If for some reason your Big Sur macOS doesn't work as expected, you can reinstall it by sending your Mac into Recovery Mode.
- Restart your machine and hold down ⌘ + R
- Choose Reinstall macOS
That's it.
Does MacOS Catalina Require APFS?
As we've just seen, running a clean install of macOS Big Sur could be a crazy rabbit hole. We hope you survived. Now you'll be rewarded with the best Apple's operating system up to date. You'll also have a clean Mac that works at blazing speed with a little extra help from our favorite Mac cleaner — CleanMyMac X. You can get started with a trial version — so download it here.