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Hello everyone, in this lesson we will take a look at how to make an Apple USB flash drive

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To make an Apple installation USB flash drive,

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we need to prepare a working Apple computer and a USB flash drive with a capacity of at least 32GB

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Once you have these things ready, you can start making

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In fact, Apple's official website has a tutorial

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We only need to search for creating a bootable Mac OS installer on Apple's official website to find this tutorial

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Let's search

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Search Apple's official website in the browser and enter Apple's official website

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Click on Technical Support in the upper right corner

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There is a search below for more topics

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We enter here to create a bootable

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After clicking in, you can see that there is a detailed tutorial here

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Our installation method is also in accordance with this tutorial

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Next we look at the second step

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Here we recommend that you download a 12, a 10.15, and a 10.11

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Among them, 12 systems support relatively new computers

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After we download the system images of these three versions,

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we can basically meet the needs of all Apple computers.

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Let's take a look at how to download these system images

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The Mac OS installer can also be downloaded at Create a Bootable Mac OS Installer

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Scroll down in this article, you can see that there is a Mac OS installer

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that can be downloaded using the APP Store or browser

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Let's click in and scroll down

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Here are various versions of the Mac OS installer for us to download

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Let's download a 12, download a 10.15, and download a 10.11.

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Click this 12 link, it will automatically jump to the app store,

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and then we can download it by clicking Get

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In order to save time here, I have downloaded the installer in advance

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After downloading the installer, let's look at the third step, the system image

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After downloading, we need to change the format of the U disk to Mac OS extended,

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and change the scheme to GUID partition map

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You can see that the format and scheme here have been emphasized when we installed the system before.

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Apple's installation of the U disk also uses the Mac OS extended journal, and the GUID partition map

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Next, we format the U disk

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In fact, it tells us here that the U disk flash drive or spare volume should be formatted as Mac OS extended format

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And at least 14GB of storage space

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Let's format

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First open the computer's disk utility

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Computer Disk Utility can be found in the "Startup Table",

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Here is a Disk Utility

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We open Disk Utility

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We can see this external hard drive in Disk Utility

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If your computer only shows volumes here, you can click this display in the upper left corner

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Click "Show All Devices" to display the devices

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Now we find the external USB drive

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Then click Erase at the top

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The name here must be a very simple and easy to remember name

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The format is Mac OS Extended Journal, and the scheme is changed to GOID partition map

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Make no mistake here

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If you make a mistake, there will be no way to proceed later.

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Once selected, click Erase and it will start the erasing process

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we'll just wait a little bit

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Well, now the format of the U disk has been changed.

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Now we can follow the tutorial on the official website to write the Apple installer into the U disk.

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Next, let's try to operate according to the tutorial on the official website

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Let's follow the official tutorial to write the downloaded installer into the U disk

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We continue to scroll down in this tutorial, here are the detailed steps

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The first step is to insert the USB flash memory used to save the bootable installer, that is, the U disk

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We have plugged in

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The second step is to open the "terminal"

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"Terminal" is located in the same location as Disk Utility

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We opened the launchpad, opened other, and found the terminal

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The third step is to type or paste one of the following commands in the "Terminal"

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Then press the Enter key to enter this command

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Then we have to change MyVolume in the command to the name of my U disk drive

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We just named the USB drive 11

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Just change the MyVolume in the command to 11

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Let's take a look at the following commands

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You can see that there are many commands here

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They are divided according to the version of the installer

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Let's first write the 12 installer to the U disk

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The name of the installer for 12 is this

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Then its corresponding command is the second

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We copy the command below

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Be careful not to copy the second row

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Copy to the second row, in the command terminal it will hit a carriage return by default and cause failure

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Let's just copy the first row

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Next, we switch to the terminal and press command+V to copy the command

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Then we have to change this MyVolume to 11

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Just delete the last one

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Change to 11 and press Enter

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At this time, it will prompt us to enter the password

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And the tutorial also tells us that when the system prompts you to enter the administrator password, please do so

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And when you enter the password, the terminal will not display anything

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So when we enter the password next, there will be no change on the terminal

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After we type the password, just press the Enter key.

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Enter the password and press the Enter key

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At this time, it asked me if I want to erase the volume, which corresponds to the fifth step of our tutorial

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We enter Y

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Then there will be a progress bar for erasing

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After the first progress bar is finished, continue to wait

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It also has a second progress bar

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The second progress bar is the writing process, which is generally slower

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Depending on the speed of the U disk, it may last from ten minutes to half an hour

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Let's fast forward here

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Ok, an installer has been made

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Let's move on to the other steps

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When an installer is written successfully, next we need to adjust the partition size of the hard disk

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Then write the second image according to the tutorial on the official website

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After the second image is written, we resize the partition repeatedly and write the third image

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Until we write all three images into it

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After all the three images are written in, we have completed the production of the installation U disk

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Next let's try

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We want to resize the hard disk partition

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Resizing hard drive partitions is also done using Disk Utility

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Open disk utility

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It can be seen that the name of the u disk volume has been changed now

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Click on the U disk, click on the partition

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As you can see, it only takes up 13.92GB now

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We can leave it with 15GB or 14GB

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We divide the U disk into a partition of 15GB, and the rest into a partition

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Change the name of the divided partition to 11, or other relatively simple names.

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Click on the application section

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Just wait patiently

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If the speed of the U disk is relatively slow, it may last for more than ten minutes to half an hour

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Let's fast forward

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Ok, now it's partitioned

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Next we write the second installer

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What we just made is the 12 installer, now let's install the 10.15 installer

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The name of the 10.15 installer is this

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Then its corresponding command is this

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Still the same, directly copy the command

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Then press command+V in the terminal

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Change MyVolume to 11 and press Enter

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Enter password

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Press Y, press Enter

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There are still two progress bars to go

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Now the second one is done too

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We still give it another division

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Next third

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Go back to Disk Utility and click on the external USB drive

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Then click on the partition

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As you can see, the second partition occupies 8.6GB

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Then we leave it with 9 G

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Add a partition

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Then change this partition to 9GB

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Rename it to 11

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Then click apply

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The time here will still be relatively long, let's fast forward it a little

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Now that the partition is done, let's make the third

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The third is the 10.11 system

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We find the command for 10.11

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You can see that this is the command of 10.11

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We still copy it over

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In the terminal command+V

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Then change MyVolume to 11

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As you can see, its MyVolume is not at the end, but in the middle

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We switch it to the middle, change MyVolume to 11, press enter

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Enter Y

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This will lead to the progress bar

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It should be noted that there is only one progress bar for the writing of 10.11,

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and the second one will not display the progress bar

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When the third one is also written, we have completed the production of the Apple installation disk

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As you can see, the third one is now also written

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So now, the boot U disk has been made

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But because my U disk is relatively large,

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we can see that the last partition still has 224GB unused when we look at the third partition

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We can divide it into another zone

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Under normal circumstances, after these three installation disks are written,

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a 32G U disk will be fully occupied.

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My U disk is relatively large, so there is still so much space left

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We can write some installers into it for the remaining space, but it is not necessary

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So we can divide the extra space into a partition and use it as an ordinary U disk

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Still the same, let's add a partition to it

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We divide the partition where the 10.11 installer is located into 7 G

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The remaining unnamed partition, we can give it a name

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The format is recommended to use exFAT

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In this way, Windows computers and Apple computers can be used

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Then click Apply to complete the partition

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Now, the Apple installation U disk is completed

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Next, you can use this Apple installation U disk to install the system on other computers.