No startup options in an erased Mac

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Level 1

4 points

No startup options in an erased Mac

Hi everyone, I've erased the 2015 27" intel Imac via icloud. Afterwards, when I start this computer with a bootable USB disk with Mavericks installed by holding options key, a startup options screen does not appear as before. It directly asks for a wifi connection. So I enter the wifi credentials and go on to the rescue mode to install online. It installs Catalina automatically without any problem. And at the end of the installation it reboots the computer normally. But at this point it does not continue with the newly installed system. It again asks for wifi connection and continues to rescue screen. I couldn't be able to break this loop or managed to get the startup options screen. Any help would be greatly appreciated. Thank you inadvance.

Posted on Jan 21, 2025 10:39 PM

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Answer 1

Top-ranking reply

Matti Haveri

Level 6

17,259 points

Jan 22, 2025 12:22 AM in response to atilalbayrak

Try if resetting SMC and especially PRAM helps.

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Answer 2

atilalbayrak Author

Level 1

4 points

Jan 22, 2025 4:53 AM in response to Matti Haveri

Hi Matti, thank you for your quick reply. I've tried PRAM before writing here. But it was not done right now I understand. I was using bluetooth pc keyboard. I than thought it might be the bluetooth keyboard that was causing the problem. So I connected a wired usb keyboard. This solved the problem and I could do the PRAM. And startup options appeared after that. Many thanks for your kindest help.

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Answer 3

a brody

Level 10

84,325 points

Jan 22, 2025 9:11 AM in response to atilalbayrak

Mavericks does not support APFS, the formatting offered for High Sierra and later installed solid state drives and flash drives. Mavericks also does not support 2015 Macs. October 15, 2014 is the newest Mac that supports Mavericks. Carefully identify what you are trying to work with following this tip:

How to find your Mac's model and age? - Apple Community

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