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La versione rinnovata, a lungo attesa, del popolare MacBook Air, con processori Intel Core i5, un Retina Display aggiornato e numerosi altri cambiamenti e aggiornamenti. Rilasciato il 7 novembre 2018.

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Installing Catalina issue with spinning globe

Hello, i recently updated my macbook air 2018 to Big Sur but today I decided to downgrade it back to Catalina. After watching some Youtube videos and reading some articles I successfully created the bootable disk drive (I downloaded Catalina from the app store and then did the rest from the terminal). After that I went erased my Macintosh - Data from the disk utilities and continued to choose install Catalina.

So, the process starts with a spinning globe, asking me for my wifi password and proceeds to install. The problem is that when the bar fully loads a warning sign appears on top of the globe and it says: “apple.com/support. -1008F”.

I googled the issue but neither cmd+R, option+cmd+R nor Shift+opt+cmd+R work, since despite what i press and hold it automatically loads the same screen: the spinning globe asking for wifi password. The only thing I can do, is hold Options on the start up, but the pnly option given to me is to install Catalina and I can no longer see “macintosh” option anywhere. And again, after selecting install Catalina, the same process goes on until it loads only to show the same error.

Can anyone help me?

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Sadly since High Sierra one can’t easily back off versions. You see once your drive is converted to APFS Apple now sets a version ID of the running OS, the older installer won’t install on a newer version OS with a newer version of APFS.

The only way to get around this is to completely erase the drive and setup a new GUID partition and install a fresh copy of the OS you want (what the system requires).

I have not played with Big Sur yet so I’m not sure what else you can encounter as the systems firmware likely got updated too!

The best way to do this is not depend on the WiFi connection. Instead get a USB-C SSD drive which you setup as a OS installer following this guide: How to create a bootable macOS Catalina installer drive Using the OS installer file link from here in Step 4 How to upgrade to macOS Catalina

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The problem is I can’t boot from a drive, as that’s the issue right now. Meaning, i am trying to boot Catalina from a usb installation drive and I don’t have the option not-to depend on wifi. As soon as I enter the usb and press Option on the keyboard the only option I have is to select “install Catalina” which leads to internet recovery. If i try to boot the macbook without the usb it goes straight to the same screen(internt recovery). So I cant find a way to boot at all right now.

da

Do you have access to a second Mac which you can connect your MacBook to using USB-C?

Use target disk mode to move files to another computer and here's a bit more Understanding the Applications for Target Disk Mode

Here we will treat your MacBook as if its just an external drive.

da

@danj Yeah I do, what should I do when I connect it? If the host macbook runs Catalina will this one boot on Catalina too? And after booting will it be done? Meaning i can disconnect and Catalina will run normally?

da

Basically you'll startup your MacBook Air in Target mode and then connect it to your other system so your other system see's it as if its an external drive.

I'll be honest here I have not tried this over USB-C nor with the newer MacBook Air retina models.

Reference: Mac startup key combinations

da

Ok this seems like it good work. I will try it and let you know. Thank you

da

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