You may would like to make Ubuntu your second or only operating system next to your mac. Well, for that you need to Install and Dual Boot Ubuntu on macOS Catalina.
The real questions is- How?
If this is what you intend to do, you require some great instructions and tools. Therefore, these tools modify your system in such a way that will make its operation closer a PC.
Don’t want to scare you, but installing Ubuntu on a mac is not as simple as it looks Windows PC.
Basically, on Windows PC the [GRUD] boot-loader is present, which used to present you dual boot options.
Thus, on mac you need something the same as [GRUD] to present the boot loader. There are different apps and softwares are available that does the job. But one of the famous one is Bootable Drive Maker for Mac.
Beside Disk maker for Mac you can also use [rEFlt].
If you don’t know the [rEFlt] is a toolkit for EFI-based machines, which allows you to dual boot multiple operating systems on a single computer.
Now you know what tools you need, let’s jump how it is done.
What You Need to Dual Boot Ubuntu on macOS Catalina?
- Ubuntu ISO image
- Balena Etcher for Mac (app)
- At least 8 USB Stick
- A Mac system
Essential for you: How to Dual Boot Kali Linux on macOS Catalina? [Quick]
1: Download Ubuntu for Desktop IOS Image
Ubuntu 18.04.4 LTS is the current version, and it will receive security and maintenance update until April 2023. Download Ubuntu 18.04.4 LTS Here
2: Download Balena Etcher App for Mac
This piece of software allows you to create bootable Ubuntu 18.04.4 LTS USB installer. Download Here
3: USB Stick Considerations
Although a 4GB of pin drive maybe enough, but for insurance plug to your mac a 8GB USB drive.
4: Mac Hardware Requirement Considerations
- 25-30 GB of free space
- At least 2 GHz dual core processor
- 4 GB RAM
- Internet connection
Don’t miss to read: Quick Steps to Create macOS Catalina Bootable USB Installer on Windows
Back Up Your Data
It is essential to back up your data before you shrink the hard drive for Ubuntu. Because there always has been complains that during making partitions, things get messed up.
Therefore, to back up your data on external hard drive use the build-in-mac Time Machine. It is quick and efficient.
However, another option to back up your data is the Cloud. There are many cloud services to use for this purpose, but the better ones are iCloud, Google Drive, Media fire, Drobox.
Quick Steps to Install and Dual Boot Ubuntu on macOS Catalina :
Step #1. Create a Partition for Ubuntu 18.04.4 LTS
Guys, first step is always the essential step.
Thus, to install Ubuntu on a mac you need to create a separate partition on your existing hard drive.
Actually, not one partition but two partitions are needed, but why two?
Well, you need to create a [main partition] with higher space, and this space will be used to install Ubuntu on it, and [SWAP space].
The Swap space is the amount of space on your hard drive which is a substitute of physical memory. Moreover, it is used as virtual memory which contains process memory image.
Steps to make partitions:
- Open spotlight and search for disk utility
- On disk utility, go to upper left corner [ View] and choose “Show All Devices”
- Select the main internal hard drive, not the sub drives, then click on “Partition”
- Now, make the main partition for Ubuntu as following.
- Name: Ubuntu
- Format: MS-DOS (FAT)
- Size: More than 25GBs, but not less
Next, click Apply.
- The SAWP Space has to include the format below.
- Name: SAWP Space
- Format: MS-DOS (FAT)
- Size: The size of SWAP must be more than amount of your RAM. If the RAM is 4GBs, then the SAWP space should be 5GBs.
Read more: How to dual boot Fedora with macOS Catalina?
Next, click Apply.
Step #2: Create Ubuntu Bootable USB Installer Drive
Before creating bootable USB drive, plug your USB stick, then erase it in disk utility with the following format.
- Name: Ubuntu
- Format: MS-DOS (FAT32)
- Scheme: GUID Partition Map
Essential to read: Fix Application is damaged, and can’t be used to install macOS
Steps to Create Ubuntu Bootable USB Installer.
- Install “Balena Etcher App” you downloaded before.
- Open Balena Etcher, then choose the Ubuntu IOS Image, and your USB drive.
- Next, click “Flash”, and you will be asked to submit your admin password.
You are done, and the bootable USB installer you will be ready in less than five minutes.
Recommend you: Install MacOS Catalina on VirtualBox on Windows PC.
Step #3: Install Ubuntu 18.04.4 LTS on a Mac
So, now that everything is prepared, you can finally do what you set out to do. Therefore, keep calm and follow the quick check lists below.
- First thing first. Insert your bootable USB stick drive.
- Reboot your mac and hold down the Option Key “ALT”
- After your mac has rebooted, you should see your internal hard drive along side with two other options that says “EFI Boot”
- Select the first “EFI Boot” option, then press return key. This will boot the Ubuntu boot loader.
- Next, select the option “Try Ubuntu without installing”, and it is going to boot into Ubuntu.
Once you entered into Ubuntu Desktop, connect your computer to an internet connection. Moreover, the next thing you going to do is click on “Install Ubuntu 18.04.4 LTS”, and then choose the following options.
- Continue with English
- Select “Normal Installation”
- Choose “Install third-party software for graphics and Wi-Fi”
- Select “Something else” on Installation Type Window
- Selected the FAT 32 partition that you created for Ubuntu. Thus, you may see two FAT32 Partitions, choose the FAT32 partition with higher gigabytes. Because the other FAT32 partition with lower gigabytes is the SAWP partition.
- Clicked on “Change”, then select for “Use as” the option “Ext4 Journaling File System” and for “Mount Point” choose “ / ”. Moreover, make sure to mark “Format the Partition”, then press OK
- Now, select the FAT32 SAWP partition you created. Clicked on “Change”, then select for “Use as” the option “SWAP Area” then press OK
- For “Devices for Boot Loader Installation” choose the Ubuntu Partition. My Ubuntu partition is /dev/sdb4. However, yours may look different.
- Click “Install Now”
- Select your “Time Zone”
- Enter your information “name, computer name, user & password”, then click continue
You’re done, and Ubuntu will finish installation in few minutes.
In order to Install and Dual boot Ubuntu on macOS Catalina or earlier versions like macOS Mojave or High Sierra, you will need to make an Ubuntu and SWAP partition on your mac internal hard drive, then prepare at least 16GB USB drive and create Ubuntu bootable USB installer.
Next, plug your bootable USB drive, then reboot your system and hold down the Option Key [alt]. Select the first EFI boot option after boot.
Moreover, once Ubuntu booted, go for the [install Ubuntu 18.04.4 LTS] and install it, then follow on screen instructions.
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