How to make new T2-secured Macs boot from external drives

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  • Reply 21 of 23
    shaminoshamino Posts: 563member
    MatteoSco said:
    I have a very big problem: from the Boot Disk Utility (Command+R at the startup) I have formatted my Macintosh HD but the secure boot was active and now the Boot Disk Utility is not opening anymore and the mac is not booting from the USB to let me install again the OS...

    Is there a way to let me able to reinstall macOS? (I can’t remove the Hard Disk since it is MacBook Pro with a 2TB integrated SSD)

    Have you tried booting from the recovery partition (See https://support.apple.com/en-us/HT201314)?  Depending on the hot-key to boot with, you should be able to install/reinstall either the version of macOS that came with your hardware (or the closest version still available), the latest version you have already installed, or the latest version compatible with your hardware.

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  • Reply 22 of 23
    nicmartnicmart Posts: 13member
    I've got a simpler solution. After buying dozens of Macs since my first two in 1984, I refuse to buy another unless Apple ends rapacious RAM and storage pricing. In other words I'll never buy another Mac, or at least not a new one.
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