Upgrade Mojave

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psheraton Author

Level 1

35 points

Upgrade Mojave

Just a question how many different ways are there to upgrade a Mac with Mojave OSX to Catalina?

As far as I am aware you can do the following:

1) Plug in an external hard disk with Catalina image on it and hold down option key and boot off it.

2) Logon to Mac and go to apple icon https://www.apple.com/uk/macos/how-to-upgrade/ and upgrade

3)

I am working in a corporate environment that uses JAMF/Intune and we can try to go to self service to install Catalina.

Cheers

Paul

MacBook Pro 13″, macOS 11.2

Posted on Apr 7, 2021 2:10 AM

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Answer 1

Best reply

PRP_53

Level 10

85,609 points

Apr 7, 2021 7:16 AM in response to psheraton

How to create a bootable installer for macOS

1 - of your points - what do you mean Catalina Image on external drive. Catalina would have be Installed on the External and functional. Or do you mean a Copy of the Installer Catalina Application. If the second of the two - it will not work. If the first - yes works.

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Answer 2

PRP_53

Level 10

85,609 points

Apr 8, 2021 2:18 PM in response to psheraton

Read this article as it appears this computer has the Touch ID T2 Chip. About Startup Security Utility You will have to boot to Recovery Mode to access the Secure Boot configuration to allow booting from External Drive

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Answer 3

PRP_53

Level 10

85,609 points

Apr 23, 2021 1:45 AM in response to psheraton

Read this article as it appears this computer has the Touch ID T2 Chip. About Startup Security Utility You will have to boot to Recovery Mode to access the Secure Boot configuration to allow booting from External Drive

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Answer 4

psheraton Author

Level 1

35 points

Apr 8, 2021 1:49 PM in response to PRP_53

Thanks however the issue is more complicated, we can't get into the OS we can only boot it up by pressing command +R or pressing and holding option with the external hard drive plugged in with Catalina OS on it.

But we get these errors (apparently the resident tech seems to think this is an easy fix?) to create a local admin account?

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Answer 5

psheraton Author

Level 1

35 points

Apr 22, 2021 11:36 AM in response to PRP_53

ok so as im a contractor onside they won't give me access to anything.

If I boot a mac up by pressing command + r then plug in an external disk with Catalina will it then allow us to upgrade to Catalina from Mojave?

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Answer 6

PRP_53

Level 10

85,609 points

Apr 9, 2021 2:03 AM in response to psheraton

Follow this Link and Read the advise of Contributor @macjack

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Answer 7

psheraton Author

Level 1

35 points

Apr 9, 2021 1:07 AM in response to PRP_53

ok this is semi helpful but you avoided the actual problem I cant change the Secure Boot config as it says "No Administrator was found" how do I fix this?

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