These advanced steps are primarily for system administrators and others who are familiar with the command line. You don't need a bootable installer to upgrade macOS or reinstall macOS, but it can be useful when you want to install on multiple computers without downloading the installer each time.
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Download macOS
Find the appropriate download link in the upgrade instructions for each macOS version:
macOS Catalina, macOS Mojave, ormacOS High Sierra
Installers for each of these macOS versions download directly to your Applications folder as an app named Install macOS Catalina, Install macOS Mojave, or Install macOS High Sierra. If the installer opens after downloading, quit it without continuing installation. Important: To get the correct installer, download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise administrators, please download from Apple, not a locally hosted software-update server.
This 2-meter charge cable - with USB-C connectors on both ends - is ideal for charging USB-C devices, and also supports USB 2 for syncing and data transfer between USB-C devices. To conveniently charge your MacBook, MacBook Air, or MacBook Pro from a wall outlet, pair the USB-C Charge Cable with a compatible USB-C power adapter, sold separately. It will format USB flash drive under Mac OS and remove all data information on the USB flash drive permanently. NO.5 USB formatting software for Mac – MacClean360. MacClean360 is all-in-one Mac cleaner and manager. It offers a tool “Disk Manager”. It can help Mac users securely and quickly format USB flash drive under Mac OS. USB Network Adapter, CableCreation USB 2.0 to 10/100 RJ45 Ethernet LAN Cable Compatible with Windows 10/8.8/8/ 7, mac OS X, Black 4.5 out of 5 stars 336 1-PackBlack.
OS X El Capitan
El Capitan downloads as a disk image. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan into your Applications folder. You will create the bootable installer from this app, not from the disk image or .pkg installer.
Use the 'createinstallmedia' command in Terminal
- Connect the USB flash drive or other volume that you're using for the bootable installer. Make sure that it has at least 12GB of available storage and is formatted as Mac OS Extended.
- Open Terminal, which is in the Utilities folder of your Applications folder.
- Type or paste one of the following commands in Terminal. These assume that the installer is still in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using. If it has a different name, replace
MyVolume
in these commands with the name of your volume.
Catalina:*
Mojave:*
High Sierra:*
El Capitan: - Press Return after typing the command.
- When prompted, type your administrator password and press Return again. Terminal doesn't show any characters as you type your password.
- When prompted, type
Y
to confirm that you want to erase the volume, then press Return. Terminal shows the progress as the bootable installer is created. - When Terminal says that it's done, the volume will have the same name as the installer you downloaded, such as Install macOS Catalina. You can now quit Terminal and eject the volume.
* If your Mac is using macOS Sierra or earlier, include the --applicationpath
argument, similar to the way this argument is used in the command for El Capitan.
Use the bootable installer
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 it. Your Mac will start up to macOS Recovery.
Learn about selecting a startup disk, including what to do if your Mac doesn't start up from it. - Choose your language, if prompted.
- A bootable installer doesn't download macOS from the Internet, but it does require the Internet to get information specific to your Mac model, such as firmware updates. If you need to connect to a Wi-Fi network, use the Wi-Fi menu in the menu bar.
- Select Install macOS (or Install OS X) from the Utilities window, then click Continue and follow the onscreen instructions.
This is how simple it is to make bootable Windows 10 USB Mac with the help of this tool. Method 2: Use UNetbootin to Install USB Driver on Mac. UNetbootin is a Windows 10 USB tool Mac that is completely free to use and can be used in a scenario wherein you have to make bootable USB Windows 10 on Mac. If you’re using a Mac, follow Method 2 for steps on using the terminal to create a Live USB Drive. In the event that you’re already using Ubuntu but you’re looking to create a Live USB Drive for someone else to try, follow Method 3 for instructions on using the Startup Disk Creator to set up a Live USB Drive.
Learn more
For more information about the createinstallmedia
command and the arguments that you can use with it, make sure that the macOS installer is in your Applications folder, then enter this path in Terminal:
Catalina:
Mojave:
High Sierra:
El Capitan:
What is the best file system for USB or external hard drive on Mac?
Windows and Mac OS X use different file systems. Windows uses NTFS and Mac can't write files to volumes with NTFS format.
So, if you want to use a USB flash drive or an external hard drive with NTFS format on Mac, you should first reformat the devices to the Mac OS Extended file system. It is the best way to ensure full Mac compatibility of a new external hard drive or flash disk.
Usually, FAT32 which can be read and wrote on Mac is recommended for maximum compatibility. And if you need to transfer files larger than 4 GB between Macs and Windows computers, exFAT or MS-DOS (FAT) is better.
How to format USB flash drive or external hard drive for Mac
But how can you format USB flash drive or external hard drive for Mac? Don’t worry! This page will show you two ways to do this job:
Format USB or external hard drive for Mac using Mac disk utility
Format USB or external hard drive for Mac on Windows PC using third-party USB format tool
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Now, you can follow these two solutions to format any hard drive, flash drive, USB drive, SSD or any other external storage drive so as to make them work on your Mac now.
Method 1. Format USB or external hard drive for Mac using Mac Disk utility
Windows offers users built-in disk management tool to create, delete, resize, merge and format partitions. You can try the following steps to format USB or external hard drive for Mac with Disk Utility on Mac.
- 1. Connect the USB or external hard drive to your Mac computer.
- 2. Launch the Disk Utility by clicking 'Applications' > 'Utilities'.
- 3. Locate and click on your USB or external hard drive in Disk Utility and then click on 'Erase'.
- 4. Next to 'Format', click the contextual menu and select 'Mac OS Extended (Journaled)'.
- 5. Reset the drive name and click 'Erase', confirm the operation on the next pop-up window.
- Wait for the process to complete and then you'll get compatible HFS+ file system on your external hard drive or USB, which will make your device compatible and workable on your Mac.
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Method 2. Format USB or external hard drive for Mac using third-party USB format tool on a Windows PC
If you need a simpler format tool to format USB or external hard drive to FAT32 to make them work on Mac, you can apply a third-party format tool to format them on Windows PC. EaseUS partition software is a popular disk partition management tool which is available for all hard disk related jobs such as format disk partition, extend system partition, settle low disk space problem.
Now you can try it to format USB or external hard drive on your Windows PC by following the steps below. If you stored important data on the USB or external hard drive, you can try this tool to convert NTFS to FAT32 without formatting.
Step 1: Launch EaseUS Partition Master, right-click the partition on your external hard drive/USB/SD card which you want to format and choose the 'Format' option.
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Step 2: Assign a new partition label, file system (NTFS/FAT32/EXT2/EXT3), and cluster size to the selected partition, then click 'OK'.
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Step 3: In the Warning window, click 'OK' to continue.
Step 4: Click the 'Execute Operation' button in the top-left corner to review the changes, then click 'Apply' to start formatting your external hard drive/USB/SD card.
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After this, you can connect your external hard drive/USB to Mac computer and use it to save data by then.