Boot Mac from USB Option l: Startup Manager. If your Mac won't boot up normally, you can set it to boot from a different drive, such as a USB stick containing macOS installation files in bootable format. The drive will have to contain a version of the OS that is compatible with the Mac. As long as you have the bootable installation USB, you can. How to: Create an Ubuntu Bootable USB on Mac, Windows or Ubuntu. If the issue is with your Computer or a Laptop you should try using Restoro which can scan the repositories and replace corrupt and missing files. This works in most cases, where the issue is originated due to a system corruption.
- Using a live USB, you can boot up the system, install programs, save items, and make configurations without altering your computer’s configuration. This article will explain how to run Ubuntu 20.04 from a USB stick. The article will also explain how to install Ubuntu on a USB drive to make the drive persistent.
- How to Create a Bootable Linux USB Drive on Mac OS X. For an OS that’s prized for its simplicity it’s strange that creating a bootable USB on a Mac is not easy. But it’s not impossible, either. Canonical recommend a command-line method to create a bootable USB with Ubuntu on Mac O SX.
- Whatever the reason may be, bootable USB flash drives makes it easier for everyone to re-install or install an operating system to your laptops and computers. Here is a list of benefits of having a bootable USB flash drive: USB flash drives are compatible to all laptops and computers.
Step 1: Format the USB drive
Apple is known for defining its own standards and no surprises that Mac OS X has its own file system type known as Mac OS Extended or HFS Plus. So the first thing you would need to do is to format your USB drive in Mac OS Extended format.
To format the USB drive, plug in the USB key. Go to Disk Utility program from Launchpad (A rocket symboled icon in the bottom plank).
- In Disk Utility, from the left hand pane, select the USB drive to format.
- Click the Partition tab in the right side pane.
- From the drop-down menu, select 1 Partition.
- Name this drive anything you desire.
- Next, change the Format to Mac OS Extended (Journaled)
The screenshot below should help you.
There is one last thing to do before we go with formatting the USB. Click the Options button in the right side pane and make sure that the partition scheme is GUID Partition Table.
When all is set to go, just hit the Apply button. It will give you a warning message about formatting the USB drive. Of course hit the Partition button to format the USB drive.
Step 2: Download Ubuntu
Of course, you need to download ISO image of Ubuntu desktop. Jump to Ubuntu website to download your favorite Ubuntu desktop OS. Since you are using a Macbook Air, I suggest you to download the 64 Bit version of whichever version you want. Ubuntu 14.04 is the latest LTS version, and this is what I would recommend to you.
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Step 3: Convert ISO to IMG
The file you downloaded is in ISO format but we need it to be in IMG format. This can be easily done using hdiutil command tool. Open a terminal, either from Launchpad or from the Spotlight, and then use the following command to convert the ISO to IMG format:
![Mac Mac](https://miro.medium.com/max/1200/1*D43UBhXalf-N7-5zJ_Ru6g.jpeg)
Normally the downloaded file should be in ~/Downloads directory. So for me, the command is like this:
You might notice that I did not put a IMG extension to the newly converted file. It is fine as the extension is symbolic and it is the file type that matters not the file name extension. Also, the converted file may have an additional .dmg extension added to it by Mac OS X. Don’t worry, it’s normal.
Step 4: Get the device number for USB drive
The next thing is to get the device number for the USB drive. Run the following command in terminal:
It will list all the ‘disks’ currently available in the system. You should be able to identify the USB disk by its size. To avoid confusion, I would suggest that you should have just one USB drive plugged in. In my case, the device number is 2 (for a USB of size 8 GB): /dev/disk2
When you got the disk number, run the following command:
Where N is the device number for the USB you got previously. So, in my case, the above command becomes:
The result should be: Unmount of all volumes on disk2 was successful.
Step 5: Creating the bootable USB drive of Ubuntu in Mac OS X
And finally we come to the final step of creating the bootable USB drive. We shall be using dd command which is a very powerful and must be used with caution. Therefore, do remember the correct device number of your USB drive or else you might end up corrupting Mac OS X. Use the following command in terminal:
Macbook Boot Ubuntu Usb
Here, we are using dd (copy and convert) to copy and convert input file (if) IMG to diskN. I hope you remember where you put the converted IMG file, in step 3. For me the command was like this:
As we are running the above command with super user privileges (sudo), it will require you to enter the password. Similar to Linux, you won’t see any asterisks or something to indicate that you have entered some keyboard input, but that’s the way Unix terminal behaves.
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Even after you enter the password, you won’t see any immediate output and that’s normal. It will take a few minutes for the process to complete.
Step 6: Complete the bootable USB drive process
Once the dd command finishes its process, you may see a dialogue box saying: The disk you inserted was not readable by this computer.
Don’t panic. Everything is just fine. Just don’t click either of Initialize, Ignore or Eject just now. Go back to the terminal. You’ll see some information about the last completed process. For me it was:
1109+1 records in
1109+1 records out
1162936320 bytes transferred in 77.611025 secs (14984164 bytes/sec)
1109+1 records out
1162936320 bytes transferred in 77.611025 secs (14984164 bytes/sec)
Now, in the terminal use the following command to eject our USB disk:
N is of course the device number we have used previously which is 2 in my case:
Once ejected, click on Ignore in the dialogue box that appeared previously. Now your bootable USB disk is ready. Remove it from the system.
(Source: itsfoss.com)
Macbooks or iMacs hardly require reinstallation of their Mac OS, but when they do then it’s a fairly difficult process especially if your secondary computer is Windows. Reinstalling Mac OS is a time-consuming process and requires a lot of patience that’s why recommend doing this process in your free time or weekends.
To get started with you require a USB drive with at least 8GB storage (16GB recommended). Then you need a working Mac OS ISO or DMG Installation Image. You can download it from the Apps Store or you can find Mac OS Image at ISORIVER.
There are 2 Methods to Create a Bootable USB drive of Mac OS on your Windows PC.
Create Ubuntu Usb Mac
Method 1: Using TransMac
- Download TransMac’s latest version for Windows from this link.
- Connect your USB drive
- Right Click on your USB drive option in TransMac and select Format Disk for Mac
- After that, right-click the USB Drive and select Restore with Disk Image
- Point to your Mac OS .dmg or .iso file by clicking the add button.
- After that TransMac will create bootable Mac OS USB within few minutes.
- Then you can insert it into your Mac, hold down the option key while turn on and boot your system with this USB.
Method 2: Using PowerISO
Another disk image utility that you can use is PowerISO. It can be used for burning both ISO files and DMG files to USB to create a bootable drive. Follow the steps below to Create a Bootable Mac OS USB on Windows PC.
Step 1: Firstly Download PowerISO and install it in your Windows PC. Launch the app and insert a USB drive into your computer.
Step 2: Import the DMG / ISO file directly by clicking on ‘Burn’ in the toolbar.
Step 3: In the Burn window, select the DMG / ISO file from the Source File section.
Step 4: You can modify the settings to adjust burn speed. The default will be set to the maximum, so you can reduce that.
Ubuntu Usb Installer Mac
Step 5: You can choose to finalize the disk and verify it. Any errors in the bootable USB will show up at that point.
Step 6: Now click on “Burn” and wait for the progress bar to reach 100%.
After the successful creation of Bootable Mac OS USB, boot your Macbook from this USB drive by clicking the option button during bootup and select this USB drive.
Watch this Video Tutorial
Ubuntu Download Usb Boot
That’s it for the tutorial If you face any issues or had any query then please let us know in the comment section below. You can also send us an email via the contact us page for personalized support.