Jul 12, 2017  There are various ways to make a bootable USB installer, but they all involve the same process: 1. Download the macOS Installer from the App Store. Run the createinstallmedia command from the Terminal, an AppleScript or a helper app. Reboot your mac, choosing the newly created USB as the startup disk. Run the installer.app from the USB. Mar 30, 2020  A broken Mac computer with Mac OS X or macOS (version 10.12 or later). A trial copy of the TransMac software. One high quality USB flash drive with 16GB of storage. A copy of Apple’s macOS (DMG file). How to make a macOS bootable USB installation media. To create a bootable USB drive with macOS, use these steps.

Following the conclusion of its WWDC 2020 keynote, Apple released the inaugural beta of macOS 11.0 Big Sur to its registered developers, with a public beta slated to arrive next month. If you’d like to install Big Sur on multiple Mac computers without having to download the installer each time, or just want more flexibility in terms of installing the software, you’ll need to create a bootable installer for the macOS Big Sur beta. Thankfully, this can be accomplished in just a few steps. Follow along with us as we document the step-by-step process for how to create a macOS Big Sur beta bootable installer.

Mar 12, 2020 After creating the bootable installer, follow these steps to use it: Plug the bootable installer into a compatible Mac. Use Startup Manager or Startup Disk preferences to select the bootable installer as the startup disk, then start up from. Choose your language, if prompted. A bootable installer. Alternatively, you might find that your Mac gets stuck in the installer with a message that 'macOS could not be installed on your computer'. When we clicked Restart the same thing happened, in the.

Why do I need a bootable installer?

Having a dedicated macOS Big Sur beta installer created on a USB thumb drive is a great option for people who have multiple Macs that they wish to upgrade to the macOS Big Sur beta. You can easily use your bootable USB installer as a startup disk from which you can boot your computer in order to install the Big Sur beta software.

You don’t need a bootable installer if you want to upgrade the current macOS on your startup disk to the Big Sur beta on a single machine. Nevertheless, it’s helpful to have a bootable installer handy for troubleshooting purposes and when installing the macOS Big Sure beta on multiple Mac computers without having to download the installer each time.

Prerequisites

Before proceeding with the creation of your bootable installer for the macOS Big Sure beta, here’s a quick checklist of the things you’ll need:

• A compatible Mac computer with macOS Catalina
• A USB thumb drive or external disk with at least twelve gigabytes of available storage
• Your disk must be named “Untitled” and formatted with the “Mac OS Extended” option
• The macOS Beta installer inside your Applications folder

The Terminal command that we’re going to use assumes that the macOS Beta installer resides in the Applications folder and “Untitled” is the name of the USB drive or other external disk you’ll be using as your bootable installer.

Do keep those two things in mind before you decide to move the macOS Beta installer out of the Applications folder and rename your external drive or format it with the APFS option.

Bootable Installer For Macos Not Completing 1

macOS Big Sur system requirements

As we noted in our dedicated article which lists the official system requirements for macOS 11.0 Big Sur, the operating system is supported on these Mac models:

• MacBook (early 2015 and later)
• MacBook Air (mid 2013 and later)
• MacBook Pro (mid 2013 and later)
• Mac mini (2014 and later)
• iMac (2014 and later)
• iMac Pro all models (2017 and later)
• Mac Pro (2013 and later)

If your Mac is not on this list, you won’t be able to run macOS Big Sur.

As you can see for yourself, the Terminal command we’re going to use basically assumes that the macOS Beta installer resides in the Applications folder and “Untitled” is the name of the USB drive or other external disk you’re using.

How to create a bootable installer for the macOS Big Sur beta

To create a bootable installer for the macOS Big Sur beta, you’ll need to do the following:

The full tutorial continues below.

How to download the macOS Big Sur beta

Follow the steps below to download the macOS beta installer.

1) Using the Safari browser on your Mac, visit Apple’s portal for developers at developer.apple.com, then click the link Discover in the navigation section top of page.

2) Click the macOS icon right below the navigation section.

3) Now click the blue Download button near the window’s super-right corner and sign in with your Apple ID user name and password when asked. You can also visit the Downloads section directly, by pointing your browser at developer.apple.com/download.

4) Click the heading Operating Systems near the top of the page.

5) Click the blue Install Profile button next to the macOS Big Sur beta heading.

This will download Apple’s special app that will permit you to download the latest macOS beta using the standard Software Update mechanism in System Preferences.

6) If Safari hasn’t automatically opened your download, click the View menu and choose the option Show Downloads, then double-click the entry “macOSDeveloperBetaAccessUtility.dmg” to mount the disk image which has been downloaded into your browser’s Downloads folder.

7) From the mounted disk image, open the file “macOSDeveloperBetaAccessUtility.pkg”.

8) Doing so will launch the installer for the utility. Click the Continue button in the Install macOS Developer Beta Access Utility window to continue.

9) Click Continue, then Agree to accept Apple’s software license agreement.

10) Click the Install button and type in your administrative password for this Mac, if asked, then click the Install Software button to continue.

11) Once you see a message saying installation was successful, click the Close button to continue. Optionally click Move to Trash when asked whether you’d like to keep the macOS Developer Beta Access Utility installer or move it to the trash.

Before the installer quits, it will open the Software Update preferences pane. If not, open it manually by clicking the Apple menu and choose the option System Preferences then choose the Software Update icon from the System Preferences window.

A message below the cog wheel should say that this Mac is now enrolled in the Apple Developer Seed Program, which lets it receive beta software from Apple. After a few seconds, the Software Update window will refresh itself to display the latest arrival, macOS Beta.

12) Click the Upgrade Now to grab the installer and make sure to fix yourself a quick sandwich until the nearly ten-gigabyte file completes downloading to your computer.

13) You Mac should automatically open the installer and display the Install macOS Beta splash screen. Do not click Continue because we’re not going to install the beta at this point. Instead, quit it without continuing installation by choosing the Quit Install macOS option from the Install macOS Beta menu or press the combination Command (⌘) + Q on your keyboard.

To verify that the macOS Beta installer has successfully downloaded to your computer, click the desktop and choose the Applications option from the Finder’s Go menu. You should now see the app named “Install macOS Beta.app” in the Applications folder.

We’ll use the macOS Beta app to create a bootable installer on an external volume

Do not rename or move this file out of the Applications folder because our Terminal script depends on this default location and file name.

Removing the beta profile

With the installer downloaded to the computer, we’re going to switch back to the standard Software Update feature so that your Mac only receives stable software.

1) Open Software Update in System Preferences.

2) Click Details below the cog wheel

3) Now click the Restore Defaults button and provide your administrative password in order to confirm that you not longer want this computer to receive beta updates from Apple. Don’t worry, this won’t delete the macOS Beta installer that we’ve downloaded. After a few seconds, the Software Update feature will revert to its default settings.

The message below the cog wheel that confirms your computer’s enrollment in the Apple Developer Seed Program should disappear automatically after a few a moment or two.

This will restore your Mac to its regular update cycle. Software Update will be showing you updates for your current macOS version. If you’d like to install any new beta updates, you can do that by booting into your beta volume and use Big Sur’s own Software Update.

How to erase an external drive

Before you can create a bootable installer, you must prepare your USB thumb drive or other external disk by erasing it. Note that you must have at least 16 gigabytes of storage space available on the disk to create a bootable installer.

Follow the steps below to erase your external drive with Disk Utility:

1) Launch Disk Utility via Spotlight or the Applications/Utilities folder.

2) Plug your USB or other external drive and wait a few seconds, then select the mounted disk in the Disk Utility sidebar underneath the heading External.

3) Choose the option Erase from the Disk Utility toolbar near the window top.

Erasing the disk permanently deletes all of its files

4) Type “Untitled” in the Name field and select Mac OS Extended (Journaled) next to the Format popup menu, then click the Erase button. Do net set the disk format to APFS because you won’t be able to create a bootable installer with it.

Do not change these options

This will wipe the disk clean, permanently erasing all data stored on it. Click Done when prompted to finish erasing the disk, which should now appear on the desktop.

How to create a bootable installer for the macOS Big Sur beta

You can create a bootable installer for the macOS Big Sur beta with a little help from the handy “createinstallmedia” command in Terminal. Without further ado, follow the step-by-step tutorial right ahead that will guide you through creating a macOS Big Sur bootable installer in Terminal:

1) Plug in your USB thumb drive or other external drive into your Mac.

2) Launch Disk Utility via Spotlight, select your disk in the sidebar and use the Erase option with the parameters detailed in the section “How to erase your external drive”.

Be sure to set the formatting scheme to either APFS or Mac OS Extended (Journaled). The disk name must be “Untitled” or the Terminal command won’t work.

3) Launch Terminal via Spotlight or your Applications/Utilities folder.

4) Type or paste the following command in the Terminal window:

sudo /Applications/Install macOS Beta.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled

5) Press Return after typing the command to execute it.

6) When asked, type your administrator password and press Return.

Terminal doesn’t show any characters as you type your password

7) When prompted, type Y to confirm that you want to erase the volume and press Return.

Creating a bootable installer takes some time so please wait until Terminal says it’s done.

Terminal shows the progress as the bootable installer is created

Bootable Installer For Macos Not Completing Download

When finished, your USB thumb drive or other external disk will have the same name as the macOS installer you downloaded, such as “Install macOS Beta.”

At this point, you can quit Terminal and eject the volume

For those wondering about the potential that the Terminal method might wreak havoc on their Mac, you don’t need to worry as this is an official Apple-sanctioned solution.

How to use the macOS Big Sur beta bootable installer

After creating the bootable installer, you must restart your Mac and invoke the Startup Manager at boot time which will let you choose the macOS Big Sur installer on your USB thumb drive or other external drive as your boot disk.

Follow the steps ahead to use your macOS Big Sur bootable installer:

1) Plug the bootable installer into your Mac.

2) Open System Preferences → Startup Disk and select the bootable installer as your new startup disk, then click the Restart button start up from it.

As an alternative method to the Startup Disk preference pane, you can simply restart your Mac and make sure to keep holding the Option key until you see the startup disk selector, then use the arrow keys to highlight your bootable installer and press Enter to boot from it.

Macos Bootable Usb On Windows

Hold down the Option key when turning on your Mac for the startup disk selector

3) Your Mac may restart a few times before it starts up to macOS Recovery mode. Choose your language, if prompted, then provide a password for your account to continue.

4) You will now see the Utilities window with several options. If you’d like to upgrade your current macOS version to the macOS Big Sur beta or install the beta to a separate partition, choose the Install macOS option and click Continue, then follow the onscreen instructions.

Avoid disrupting your current setup

You’ll want to select Disk Utility from the menu before launching the installer to prepare the startup disk by creating a separate partition to install the beta to it. You will be able to boot between your current macOS version and the macOS Big Sur beta by holding down the Option key while using the computer or changing your Startup Disk preferences.

You will want to install the macOS Big Sur beta without disrupting your current setup — according to Apple’s official release notes, installing the macOS Big Sur beta into the same APFS container as previous versions of macOS, like macOS Catalina, will prevent the Software Update mechanism from installing on the previous version of macOS.

That’s why you’re wholeheartedly recommended to use Disk Utility and create a new partition on your startup disk and choose it as your target during the macOS Big Sur beta instal process.

This caveat is buried deeply enough in the macOS Big Sur release notes that a lot of people are going to be bit by it. Creating a new volume in an existing APFS container had become the de facto best way to install a second OS. pic.twitter.com/BscbELxj6Q

— Daniel Jalkut (@danielpunkass) June 23, 2020

Oh, one more thing: the bootable installer may require the Internet to get information specific to your Mac model, such as firmware updates. If you’re prompted to connect to a Wi-Fi network, click the Wi-Fi icon in the menu bar to join a desired wireless network.

Change your Secure Boot settings

After selecting your bootable installer — either at boot time or via the Startup Disk preference pane — you may be see a message warning you that your default security settings do not permit your Mac to use an external startup disk.

You may need to change your settings to allow booting from external disks

That’s especially true for newer Macs equipped with Apple’s security chip that provides the Secure Boot capabilities. In that case, start up in macOS Recovery mode by restarting and holding down Command (⌘) + R until the Apple logo appears on the screen.

After a minute or two, macOS Recovery should load. Choose Startup Security Utility from the Utilities menu and enter your administrator password when asked.

macOS Recovery mode requires your account password before you’re permitted to use its tools

Now select the option Allow Booting From External Media which does just that. Next, close out the Startup Security Utility window and choose Restart from the Apple menu.

Change your default settings to allow booting from external media

You should now be able to use the Startup Manager (hold down the Option key while restarting) or the Startup Disk preferences to set the bootable installer as your startup disk.

Need help? Ask iDB!

If you like this tutorial, pass it along to your friends and leave a comment below.

Got stuck? Not sure how to do certain things on your Apple device? Let us know via [email protected] and a future tutorial might provide a solution.

Submit your own how-to suggestions via [email protected].

When your computer encounters a serious problem that normal troubleshooting methods can’t fix, you can try installing a fresh copy of your macOS to resolve it. If you want to install the latest macOS version that was previously installed on your computer, just press Command + R when restarting your Mac to pull up the macOS Recovery dialog.

But what happens when the Command + R shortcut doesn’t work? You can still access your macOS Recovery options, but it’s going to be a bit more complicated. This guide will teach you how to reinstall your macOS even if Mac Recovery Mode is not working on your MacBook.

But first, it is important to understand the reasons why the Command + R shortcut may not work.

Reasons Why Command R Is Not Working on Macbook

There are a few reasons why the Command + R combination may not work on your computer, such as:

• Age of your Mac – If you’re using a Mac that’s still running OS X Snow Leopard or older operating system, then your version doesn’t have Recovery Mode. This feature was introduced with the release of OS X Lion in 2011 to allow users to diagnose hardware features and troubleshoot common Mac problems on startup.
• macOS version – If your macOS version is older than Sierra, then the Recovery options you have may not be the same as those running newer versions.
• Faulty keyboard – It is possible that your letter keys are not working.
• Corrupted recovery partition – Your recovery partition may have been corrupted or deleted.

Before we discuss how to access your Recovery mode when Command + R is not working on Macbook, let’s first talk about what this mode is and its functions.

What Is MacBook Recovery Mode?

Not all Mac users know what the Recovery Mode is and what it is for. Many users don’t even know this feature exists. To put it simply, the Recovery Mode is a dedicated partition on your hard drive housing a recovery image and a copy of your macOS installer. This partition is completely independent from the other partitions on your disk that even if you wipe your hard drive clean, it would still be there.

The recovery partition is helpful in extreme cases where you might need to reinstall a fresh copy of your latest macOS or OS X. Even if you format your drive and start from scratch, this partition remains intact and you can still reinstall your macOS, restore from a Time Machine backup , or repair your disk via Recovery Mode.

The Recovery Mode makes troubleshooting a lot easier and faster because all you need to do is press two keys: Command + R. But before you proceed with the solutions below, make sure to back up all your important files and optimize your Mac using an app such as Tweakbit MacRepair.

How to Check if Your Mac’s Recovery Partition is Working

The first thing you need to rule out is whether you actually have a recovery partition and if it is working fine.

To boot into your Recovery Drive, follow these instructions:

1. Shut down your Mac by clicking the Apple menu and choosing Shut Down.
2. Once the computer is turned off, hold down Command + R, then press the Power button.
3. Keep holding the Command + R keys until the Apple logo appears. Let go of the keys and wait for the startup process to complete. This may take longer than your usual boot up process, but don’t worry because it’s just loading items from your recovery partition.
4. When you see the macOS Utilities window or OS X Utilities for older Macs, then it means your recovery partition is working.

But if your Mac boots into the regular login window or just loads a blank screen, then you don’t have a recovery partition.

You can also use Terminal to verify if you have a recovery partition by following the steps below:

1. Launch Terminal via Utilities folder or Spotlight search.
2. Type in diskutil list. This will show you a list of all the volumes and partitions on your Mac.

Look for drive with Boot Recovery HD in its name because that’s your recovery partition. If you see it on the list but can’t boot into it for some reason, then the drive could be corrupted. If it’s not on the list, then the drive could have been deleted or you never had it in the first place.

Let’s look at some of the things you can do when Mac Recovery Mode is not working on MacBook.

Virus scannerAerialScreensaversWin.zip827-Aerial.saver.zipAVGAvastAviraBitDefenderClamAVESET-NOD32F-SecureTrojan-Downloader:W32/Kavala.B.KasperskyMalwarebytesMcAfeeMicrosoftPandaSymantecTrendMicroLast scanned1 month ago6 days ago. The screensaver features automatic updates of the latest available videos, an option to show a different aerial view whenever it starts, and the ability to add specific views to a list of favorites. Fliqlo for mac catalina 2019. We are happy to share the results. Anti-virus report for Apple TV Aerial ViewsOur editors have reviewed all files and found them to be safe, but they are also checked automatically using many different virus scanners. Requires OS X version 10.9 (Mavericks) or newer, or Windows version 7, 8 or 10.

Method 1: Use Internet Recovery to Reinstall macOS

If you have a corrupted or missing recovery partition, you can still reinstall your macOS or OS X via the Utilities tool. This feature is available for newer Macs, and it allows you to boot directly from an internet connection even without a recovery partition.

To use macOS Internet Recovery:

1. Shut down your Mac by clicking the Apple logo > Shut Down.
2. Hold down the Command + Option/Alt-R keys, then press the Power button.
3. Let go of the keys when you see the spinning globe and the message “Starting Internet Recovery. This may take a while.”
4. A progress bar will appear after this message. Wait for it to complete and for the macOS Utilities window to appear.
5. Click Reinstall macOS from the options that appear and follow the on-screen instructions.

Take note that Internet Recovery only works with networks using WEP and WPA security. If your network is using a different protocol, we suggest you connect to one that is compatible with the Internet Recovery feature because this method, by far, is the easiest way to reinstall your macOS.

Method 2: Create a USB macOS Bootable Installer

If you have no access to Internet Recovery, you can try creating a bootable macOS installer using a flash drive. You need one with at least 12GB in storage. If you’re using an existing flash drive, make sure to back up all the files in it because this process completely erases all the content of the USB.

The easiest way to create a USB macOS installer is via Terminal. But first, you need to locate the Install files for the macOS version you want to install. Go to your Applications folder and look for the installer files, or you can get them from your Mac App Store under the Purchased tab.

Once you have downloaded the installer, follow these steps to create your bootable drive:

1. Connect your flash drive to your computer.
2. Launch Disk Utility and select your flash drive. This should be listed under External in the sidebar .
3. Click Erase.
4. Once the drive has been erased, you’ll see that the name of the drive has been changed to Untitled.
5. Launch Terminal and copy the following command, depending on the version you want to reinstall:
   • Mojave: sudo /Applications/Install macOS Mojave Beta.app/Contents/Resources/createinstallmedia –volume /Volumes/USB –nointeraction –downloadassets
   • High Sierra: sudo /Applications/Install macOS High Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume –applicationpath /Applications/Install macOS High Sierra.app
   • Sierra: sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume –applicationpath /Applications/Install macOS Sierra.app
   • El Capitan: sudo /Applications/Install OS X El Capitan.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume –applicationpath /Applications/Install OS X El Capitan.app
   • Yosemite: sudo /Applications/Install OS X Yosemite.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume –applicationpath /Applications/Install OS X Yosemite.app
   • Mavericks: sudo /Applications/Install OS X Mavericks.app/Contents/Resources/createinstallmedia –volume /Volumes/MyVolume –applicationpath /Applications/Install OS X Mavericks.app
6. Type in your admin password. Next, type in Y and hit Return .

This will erase your hard drive first, and then convert your USB into a bootable installer. Wait for the process to finish, and then use your new bootable installer to reinstall your macOS using the steps below:

1. Shut down your Mac while your USB installer is connected.
2. Hold down the Option/Alt keys, then press the Power key.
3. You’ll see your startup device list with the USB drive highlighted in yellow.
4. Choose your bootable drive and hit Return.
5. Choose Disk Utility and select your main hard drive.
6. Click Erase, then give your drive a name.
7. Select Mac OS Extended (Journaled) under Format and GUID Partition Map under Scheme.
8. Click Erase > Done.
9. Go to Disk Utility > Quit Disk Utility.
10. Hit the Install macOS button, then click Continue.
11. Follow the installation instructions.

The whole installation process can take around 30 minutes to one hour , so make sure that you have enough battery or your Mac is plugged in to avoid interruptions.

Summary

You can use any of the above methods to reinstall your macOS even without a Recovery partition. However, if your computer is running Snow Leopard or older, you need to install the operating system using the original discs that shipped with your Mac (if you still have them), or purchase them from Apple for $19.99.