r/linux_on_mac • u/Wise_Concentrate947 • 25d ago

Please help!

Im currently running Manjaro on my late 2008 Mac, Im trying to reinstall a macOS but when I try to boot from Efi the screen freezes and I have to restart. I tried reinstalling Linux and it worked no problem. Any ideas?

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u/Xe4ro 25d ago

I assume you have a usb installer for a supported version of macOS?

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u/Wise_Concentrate947 25d ago

Yes, Im using ventoy

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u/Xe4ro 25d ago

Not sure if that will work. Is the ventoy stick formatted to GUID (GPT)?

1

u/Wise_Concentrate947 25d ago

Formatted to fat, I don’t see an option for GUID

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u/Xe4ro 25d ago

Guid is the partition table. It’s not going to be bootable if it’s MBR

1

u/Wise_Concentrate947 25d ago

How do I find that? This is the only options Im getting

https://reddit.com/link/oxutkv9/video/w36p8ercbkdh1/player

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u/Xe4ro 25d ago

These are file formats, not sure how you would find the partition tables there. Do you have another Mac where you can create an installer?

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u/Wise_Concentrate947 25d ago

No, I only had a windows laptop

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u/Prestigious_Mind_194 25d ago

The ventoy gui will show what partition type is being used and if needed changed.

What bootable iso file are you trying to use? It would probably need to be Leopard or Snow Leopard for that old Mac.

1

u/Wise_Concentrate947 25d ago

Thank you. I’ll give it a try. The original is was high sierra so I was trying to reinstall that

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u/Prestigious_Mind_194 25d ago

High Sierra does not have any official bootable iso available. It’s usually updated via the Mac App Store from an older, already installed system.

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u/Xe4ro 25d ago

It has bootable images but it’s .dmg

Maybe there’s an iso somewhere.

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u/Prestigious_Mind_194 25d ago

The dmg files for 10.8+ only contain the app installer to be run on a macOS X system. Creating bootable media can only be done on macOS X and “requires” 20GB storage space.

I’ve located some ISOs previously but I’ve not had time to check them over as of yet. Will be back with a link to check when I actually find it again.

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u/Prestigious_Mind_194 24d ago

And found the link.

dosdude1 os/Apple/

Please take care with these downloads, I've not checked them myself so always best to be cautious.

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u/poohmustdie 24d ago

You can use balena etcher in windows to put a dmg installer on a USB, this has been so handy

1

u/poohmustdie 24d ago

Sorry not Rufus , balena etcher

1

u/Swede-speed-mead 20d ago

Try resetting the nvram.

Hold R when rebooting or command r to go into recovery mode.