How To Installing macOS Catalina on an iMac Device
Published: 2023-12-02 03:56:41

`cout << "Dhafin Salman - 2308816";`

macOS Catalina is an operating system from Apple released in 2020. On this occasion we will discuss the installation process starting from downloading the macOS Catalina installation file to setting up the macOS installation.

**General System Requirements macOS Catalina**

- OS X 10.9 or later.
- Memory of 4 GB.
- 12.5 GB of available storage space (OS X El Capitan 10.11.5 or later).
- Some features require an Apple ID; conditions apply.
- Some features require a compatible Internet service provider; fees may apply.

**Mac Hardware Requirements**
To get details about your Mac model, click the Apple icon at the top left of your screen and select About This Mac. The following Mac models are compatible with macOS Catalina:

- MacBook (Early 2015 or later).
- MacBook Air (Mid 2012 or newer).
- MacBook Pro (Mid 2012 or newer).
- Mac mini (Late 2012 or later).
- iMac (Late 2012 or later).
- iMac Pro (Year 2017).
- Mac Pro (Late 2013 or later).

**Equipment and Materials**
Materials and equipment that must be prepared to install macOS Catalina:

1) First we have to download the macOS Catalina bootable file directly from Apple's Official App Store. If you don't have the App Store, we can download it via the following alternative link:

- Web Address:
https://allmacworld.com/macos-catalina-10-15-7-free-download/

- Download link:
https://download213.xyz/MAC/macOS_Catalina_10.15.7_19H2_Multilanguage.dmg

2) A 16 GB flash disk that has been formatted "mac OS (Extended Journed)" to be used as a bootable macOS Catalina

3) Apple Computer devices of course such as Mac, iMac and MacBook

**Making Bootable with Terminal**
Here we will use the terminal to create a bootable macOS Catalina. Here's how to make bootable:

1) First, we open Disk Utility to format the Flashdisk, then select the Flashdisk to be formatted.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xukvp39dgzeofoyvd1el.png)

2) Then click erase and format to "mac os (Extended Journed)" and give it a name, if so click Erase.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/l9hdwe58ta6ruhkmyn0h.png)

3) A warning will appear to format the flash disk, click Erase to continue the process.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4b6tri5s5tstrnjwyezc.png)

4) Now we open the terminal on the iMac or other Apple device then enter Command :
“sudo”

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/jr0ewhdx2hph38wukddh.png)

5) Then we look for macOS Catalina Application in Finder.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/u3a4e5d9xpqvxleaev67.png)

6) Then right click and select Show Package Contents.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/hnoi7v6lxo2qhnhgiwv2.png)

7) Then now we select the Contents folder.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/syyxtf8khs9ggb7c5h9v.png)

8) Then we select the Resources folder.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/9jp5mfvahy0licz5um1b.png)

9) Then we look for createinstallmedia then drag it to Terminal.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/l74h18nxg37ih3f3blbn.png)

10) Then we drag or drag and drop the createinstallmedia file into Terminal.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/lbwdb0h9iih2s8wy3z4g.png)

11) After that enter Command :
"--volume"

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/tpvq81cswzysw4vvb0uf.png)

12) Then we type in the volume location or drag the flash disk volume that has been formatted to mac os (Extended Journed) into the Terminal.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/5q25hhhljckuliovqhtf.png)

13) Then enter the administrator user password to continue the bootable format process.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/dwxxz7sa23eienwhlxhx.png)

14) After that we type "y" to continue the formatting process and press "enter".

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/6dganmy10apves9fn4xe.png)

15) Now we wait until the process is complete. If the process is successful then a dialog will appear as below, then the bootable creation process has been successful.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/b7o0jhi7qq3eohxqn2xe.png)

**macOS Catalina Installation Process**
Here's how to install macOS Catalina on an iMac device:

1) First, we insert the bootable flash disk into the iMac.

2) Turn on the iMac then press the “option” button on the keyboard.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8032uprs47s4zgzqp977.png)

3) Then select boot macOS Catalina from the inserted flash disk.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/j55egkh23j9i50g9563a.png)

4) If you have entered the boot menu, first we format the Mac hard disk. Select the "Disk Utility" menu.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4l9ghtfle7wtgcf19hmq.png)

5) Next, we select the iMac internal hard disk that will be formatted.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gwajta98t2kr7avibzob.png)

6) Then we select Erase at the top. we name the partition/hard disk and format it to "mac os (Extended Journed)".

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/yum9ctp3t3vkwfhcebvk.png)

7) Then we click "Erase", if a dialog like the one below appears then the formatting process was successful then click done.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/z2ghu280o5g10xq4iu50.png)

8) After that we close or return to the initial menu. We select "Install macOS".

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/w4qnxzrk7fbcwrnq4ndu.png)

9) We select continue or next.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/68yl7okvcam78u8f3vt4.png)

10) Then we select agree

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/9ciecw7s65zkbcy9py8y.png)

11) Then there will be a notification as below. We click agree to continue the process.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/eelnsi2fw1xje1le2ekb.png)

12) Next, we select the internal hard disk that has been formatted and named earlier to install macOS Catalina and click "Install".

13) Now wait for the installation process to complete.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/a7id2jcv3am0cn8cz205.png)

14) After the installation process is complete, now we will enter the macOS setup process before use. First we set our region, after that we select continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/i6td565xguwjpg5iuz8b.png)

15) Then options will appear as below, we leave the default by just Next or Continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gwhyw6yhrphrvela51rl.png)

16) Then we select the internet connection, here we will connect to the internet later after the installation process is complete then select "other network options".

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/jirna09wdjyi9vkuzlse.png)

17) Then we select the third option and click continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/o9vbz581z0cimi8cetwd.png)

18) A notification will appear as below, we just click continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xqwnvt4zqxrq1qz5hwu4.png)

19) Then a menu will appear as below, we just leave the default and click Continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/hf8ihmeiam20de1t6dvl.png)

20) Then a menu will appear as below, we will select option 3 then click Continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/pvaxmw071sb96hk8fmzs.png)

21) Then the Apple ID login menu will appear, if we have one then log in immediately, if we don't have one then we select "sign up later" and Continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ld8z1joe4a4nmirmjzhq.png)

22) Then a notification will appear as below. Let's just click Skip.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4ievuozpco8xjhos0x25.png)

23) Then the Terms and Conditions menu will appear as below. We select Agree to continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gga3nuge6xm43y2mphxc.png)

24) Options will appear as below. We click Agree to continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/1m640zdv96t6fo6oofq7.png)

25) Now we enter the main administrator account creation menu, we create a user and password then click Continue to continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/g7r868quvotn3d9lpmxz.png)

26) Then the Express set up menu will appear, we just leave the default and click Continue to continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ccplcrbn3l3czwtwt1d4.png)

27) Then the Analytics menu will appear as below, we just leave the default and click Continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/sh0xv7x6to2jsep3mexw.png)

28) Then the Screen Time menu will appear as below, we just leave the default and click continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ypn61d78l6d1f276vigy.png)

29) Then the Siri menu will appear, here we check "Enable Ask Siri" then click Continue to continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v81pdus5mannow8z234i.png)

30) Next, we select the language used to use the Siri feature, then we select the default language and select Continue.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7q88bqsilb2hdy6wgq2k.png)

31) Then we select Theme on macOS Catalina, here I select Dark so that the appearance of macOS Catalina looks better, if so, we click Continue to complete the setup.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vd774ik59u33m2v1132g.png)

32) We wait for the macOS Catalina setup installation process to complete.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vj9xugwvq9cynkxukxzf.png)

33) Then the macOS Catalina installation process has been completed and the iMac can be used.

![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/w0i1nxkshs64a48cos0k.png)