Related: How to Boot an OS from a USB Drive in VirtualBox. Try a Different Version of VirtualBox. No program is free of bugs, and this goes for both Ubuntu and VirtualBox. Some users have found that different versions of VirtualBox and Ubuntu sometimes just don’t get along. I have attempted to install a virtual Ubuntu Server on my Mac (BigSur) with VirtualBox. I cannot access my directory to install the Ubuntu OS when I start the VM. Failed to open a session for the v. MacOS VirtualBox VM on Ubuntu Posted by Shujin Wu on February 23, 2017 Step 1： Download the Sierra installer from Mac App Store. This should be done in you Mac and the installer will be placed in /Application/ folder. VirtualBox is available for Windows, Linux, and macOS. Installation will differ depending on your computer's operating system, so check the detailed instructions on the VirtualBox download page. Once installed, VirtualBox is ready for the creation of a new virtual machine.
This in depth guide will take you every step of the way through installing Ubuntu Linux on your Mac, by way of VirtualBox – a free and outstanding program. Using this method you’ll be able to run Ubuntu and macOS at the same time!
Please note: although this guide was initially authored in 2015, it has been updated (2020) to be current. The following guide uses Ubuntu 18.04.3 LTS “Bionic Beaver”, but the steps and screenshots are nearly identical for most versions of Ubuntu, up to including 20.04.1 LTS.
Using this method to install Ubuntu not only allows you to run it and macOS at the same time, you can really try out Ubuntu – and if you don’t like it – very easily get rid of it. Plus, it will not affect the files in macOS itself at all. None of the data on your Mac is at risk of being deleted or altered. The entire process is actually quite straightforward – and all of the software involved is free – so why not give it a shot :)
- Before you get started, there are a few things that should be noted up front.
- Depending on the speed of your Internet connection, it might take a while to download Ubuntu. During the actual installation process, based on the version of Ubuntu you opt to install – you may have to spend some time downloading updates as well.
- The installation time is about 20 minutes, depending on the speed of your Mac, amount of memory etc. You may want to make yourself a cup of coffee or tea before you start.
- Running both Ubuntu and macOS at the same time will “slow down” your Mac. The more memory you have and the faster your CPU and/or hard drive is, the less you’ll notice it.
Let’s get started!
- First up, head over to the Ubuntu download page and download Ubuntu.
- Now you’ll need to download and install VirtualBox. Visit their download page and click the link OS X hosts (which is the current stable version). Once the download has completed, open the .dmg file and run the installer – the installation is as easy as clicking ‘next’ a bunch of times. When installation is done, launch VirtualBox from your Applications folder.
- When VirtualBox opens, click the New button.
- Give your “virtual machine” a name (something descriptive is good, but it doesn’t matter). Make sure the Type: is set to Linux and the Version: is Ubuntu (64 bit). Then click the Continue button.
- Now you’re going to decide how much memory (RAM) you’re going to allocate to Ubuntu when it’s running, and how much to leave for macOS. As illustrated in the screenshot below, my total RAM is 4GB, so I allocated half of it to Ubuntu, and the other half to macOS. The more memory you give to Ubuntu, the faster it will run. The drawback is that macOS will have less to use while Ubuntu is running. At a minimum, give Ubuntu at 1GB (1024MB) of RAM. When you’ve decided how much memory (RAM) to give Ubuntu, click the Continue button.
- On the Hard drive screen, select Create a virtual hard drive now and then click Create.
- Now select VDI (VirtualBox Disk Image) and click Continue
- Select Dynamically allocated and yep – you guessed it – click Continue
- Use the “slider” to determine the size you want to make the “hard drive” for Ubuntu. At a minimum, you’ll want to select 6GB – and that will not allow for you to install many programs, let alone store files etc. Keep in mind that because you selected “Dynamically allocated” in the previous step, that does not mean that VirtualBox is going to take up that space right away. It means that as Ubuntu needs more space, it will allow the “hard drive” to increase up to whatever size you set at this step.
As illustrated in the screenshot below, I opted to give Ubuntu 10GB. That’s enough for the installation and to install quite a few programs. Since I won’t be “storing” many files in Ubuntu (movies, pictures, music etc) – 10GB will suit my needs. Plus, I have a small hard drive on my MacBook Air. If you have a big hard drive, you might as well allocate more rather than less, again – the space won’t be used until it’s needed. After you’ve made your selection, click Create.
- Almost time to install Ubuntu! Click the Start button.
- If you’re using macOS 10.15 (Catalina) or later, you’re going to need to ‘allow’ Virtualbox to receive keystrokes from any application (which is completely safe). Click the Open System Preferences button.
- Click the ‘lock’ icon in the bottom left corner of the screen. After entering your password, place a check in the box next to the Virtualbox item in the list.
- Click Later when prompted.
- Back in Virtualbox you’ll be prompted to locate a file. Click the “folder” icon next to menu that says Empty (see screenshot below).
- Again, if you’re using macOS 10.15 or later, you’ll be prompted to grant permission for Virtualbox to access a folder. Click OK. You may be prompted to do this several more times – just click OK each time.
- Navigate to the Ubuntu .iso file that you downloaded all the way back in step #1. Select it, and click Open
- Now click Start
- Finally! Click Install Ubuntu
- Select your keyboard layout and preferred language then click Continue
- Make sure to place a check in both of the boxes – Download updates while installing Ubuntu and Install third-party software for graphics and Wi-Fi hardware and additional media formats – then click the Continue button.
- Select Erase disk and install Ubuntu. NOTE: this is not going to ‘wipe out’ or erase any data in macOS. None. It is safe to click Install Now, so do just that.
- Click Continue
- When prompted, select your Time Zone and then click Continue
- Fill in each field with the required information. When you’re done, Continue
- Now it’s time to sit back and relax with that cup of coffee or tea. This may take a bit.
- Yay! It’s done! Click Restart Now
- Hit Enter (the ‘return’ key on your keyboard) when prompted.
- And you’ll boot into Ubuntu! Enter your password when prompted.
- Welcome to the Ubuntu Desktop! At this point you should be connected to the Internet and completely ready to go – have fun!
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Windows, macOS – which one do you want to use today? On a traditional setup, you’re stuck with one or the other. But with virtual box, you actually have macOS on a Windows PC.
It’s the freedom that computer users have enjoyed with Linux and other operating systems.
But Apple has made it difficult to install their operating system on anything other than their own hardware. All of that is changing, and Virtual Box is responsible for it and the rise of the Hackintosh.
New to hackintosh? Learn more about it in our what is hackintosh? overview.
Note: A lot of people will be able to get a mac virtual machine one Windows running smoothly, but sound doesn’t seem to work well. That’s really not an issue because you’ll still be able to access all of your apps and software.
I also recommend that you have access to a real Mac. You might be able to find some distributions of the High Sierra ISO online, but there is always a risk when downloading from an unofficial source. Instead, borrow a Mac from a friend, or use your own and download the High Sierra OS from the App Store.
Check out our high sierra installation guide for hackintosh
Everything You Need to Get Started with Installing macOS on VirtualBox
Before we go through the steps on how to install macOS on Virtual Box, let’s get everything together that you’ll need to get started.
- Open up your Mac
- Go to the App Store
- Type in “High Sierra”
You’ll want to search for your desired operating system (we’ll be using High Sierra), and Download it.
Note: You’ll need a decent computer to be able to run Virtual Box. Your computer will need to meet these minimum requirements:
- Dual core processor
- 4GB Ram or higher
- 64-bit
If your computer doesn’t meet these requirements, you won’t be able to run macOS properly. You’ll be able to download VirtualBox from the official website. I’m not going to go through the installation process, as the website will have all of the information you need to be able to install VirtualBox.
I do recommend that you read all of the documentation and ask any questions that you have in the community section of the website.
VirtualBox 6.0 was just released, so it’s definitely a great time to get started with your own macOS.
Extract macOS Sierra
Make sure you’ve downloaded High Sierra, and then you’ll want to run a few commands from your terminal . You’ll be able to open the terminal at: Applications > Utilities > Terminal. Once inside of the terminal, you’ll want to run the following commands:
Go to your desktop and rename the file, removing the “.cdr” extension. You need this extension to read “.iso” for it to work properly.
You’ve successfully created your own ISO file so that you can bootup your macOS.
The next step is to copy the file over to your Windows machine (using a large USB drive seems to work best). This file will be mounted in your virtual machine later on in the article, so it’s very important that this step is completed successfully.
Creating a mac Virtual Machine on Windows
You’ll want to create a virtual machine, and this is really easy. You’ll open up VirtualBox and click New. You’ll want to have the following parameters selected or entered before clicking Next.
- Name: High Sierra
- Type: Mac OS X
- Version: Mac OS X (64-bit)
Pay attention when selecting the version because you may find that High Sierra is offered as a version when you go to install it. But if it’s not, you can just choose the settings I listed above and they should work fine.
You’ll then be proceeding through all of the settings.
When you come up to the RAM setting, you’ll want to be generous. VirtualBox requires a minimum of 4GB or RAM to run, but the more the better.
Why?
You’ll want to provide at least 4GB to your macOS, or 4096MB to be precise. A general rule of thumb is that if you can spare it, supply more RAM to your virtual machine. RAM will allow the operating system to put more information into memory and retrieve it faster.
For better overall performance, supply as much RAM as you can.
The next steps are also important, and they’ll include:
- Hard Disk: Choose the “Create a virtual hard disk now” setting.
- Choose VDI when choosing the hard disk type.
- Choose Fixed Size instead of Dynamic for added speed.
- Set the size of the drive to at least 25GB.
You’ll now have your virtual machine using the RAM and disk space properly, and you’ll have to work your way through a few screen prompts before having everything setup properly.
Configuring Your VirtualBox to Run macOS High Sierra
We’ve made a lot of progress so far, and now it’s time to configure your virtual machine properly. You’ll see in the main window of VirtualBox that “High Sierra” is listed. Click on this and then click on the “Settings” button.
You’ll want to go to “System” and make sure that the following are unchecked on the Motherboard tab:
- Floppy
- Network
Click on the Processor tab and make sure that you have 2 or more CPUs set for your virtual machine.
The next few settings are rather simple:
- Display: Video Memory with a minimum of 128MB
- Storage: Click “Empty” and then click on the CD at the top right. Choose your High Sierra ISO file
Now you’ll need to click “Ok,” and save all of the changes you’ve made. Close out your VirtualBox now.
Apple is very strict on the system that their operating system runs on, so it’s very important that you do your best to configure your virtual machine in such a way that it tricks the installer to thinking you’re on a retail machine.
We’ll now be going into the Windowscommand prompt.
You’ll do this by:
- Clicking the Start Menu
- Typing “Command Prompt”
- Right-clicking on the Command Prompt desktop app
- Choosing Run as administrator
It’s very important to follow all of the following command prompts exactly. Your goal is to run each command, one by one, hitting the Enter button and waiting for the command to complete successfully.
Remember that VirtualBox needs to be closed before running these commands, or it won’t work properly.
Macos Virtualbox Ubuntu Slow
You have to make sure that the virtual machine is properly named “High Sierra” for this method to work. If not, you’ll be able to go back and make changes to the name to get everything to work properly.
Once all of the commands are completed, and there are no errors, you’ll then be able to open up your VirtualBox and get macOS High Sierra installed properly on VirtualBox.
It’s a long process, but we’re almost done with your installation.
Running VirtualBox and the macOS Installer
You’ve almost learned how to install macOS on VirtualBox entirely, and we’re on the home stretch. You’ll want to open up your VirtualBox and then click on your virtual machine that you set up earlier.
Now, click “Start.”
There will be a lot of information displayed on the screen as everything starts running. I recommend stepping away from the machine and letting it run for a few minutes before coming back. Some errors can hang for 5 minutes or longer.
If you’ve done everything properly, you can be confident that the installer will boot properly.
You’ll eventually be presented with the option to pick a Language. If you’ve reached this point, you’re doing very well and are almost ready to run your macOS.
The next steps can be followed:
- Choose your desired language, and click
- Click “Disk Utility” and then
- Click “View” and then “Show All Devices.”
- Click on your empty virtual drive that has been setup and click “Erase.”
- Choose the following settings:
- Name: Macintosh HD
- Format: Mac OS Extended (Journaled)
- Scheme: GUID Partition Map
- Click “Erase” and close Disk Utility when the process is complete.
- Click “Reinstall macOS.”
- Click “Continue.”
You’ll come up to one point where you’ll be asked to choose a hard drive, and you’ll want to select the Macintosh HD partition that you just created with the Disk Utility.
We’ve successfully copied all of the files on the virtual machine, but we’re not done just yet.
Exit your virtual machine and then go back to your virtual machine’s settings. You’ll need to change up your Storage settings. Click on your ISO for High Sierra in the “Storage Tree.” You’ll click that CD icon just like we did earlier and then choose “Remove Disk from Virtual Disk.”
You need to do this to unlink the ISO from your virtual machine.
Start up your virtual machine and you should come across a black screen with the EFI Internal Shell. You’ll want to look for FS1. If this is listed in yellow, click on the virtual machine and then type fs1: and hit the Enter button.
You should be in the fs1 directory.
Type in the following commands:
- cd “macOS Install Data”
- cd “Locked Files”
- cd “Boot Files”
Now we’ll run the installer by running: boot.efi and hitting enter.
If everything goes well, you’ll come across a graphical installer and will just have to work through the prompts. The virtual machine will reboot eventually and then you’ll need to go through the settings and the rest of the setup process.
Soon enough, you’ll be right inside of macOS, where you’ll be able to start using your mac virtual machine on Windows.
Macos Virtualbox Ubuntu Resolution
Having a virtualbox mac OS is the easiest method of using mac as and when you need it. In addition, using virtualbox is far less complicated than the dual boot hackintosh method we have looked at previously.