29 июл. 2022 г. · If the globe icon doesn't appear, try a PRAM reset first, by holding down cmd+alt+R+P immediately after the startup chime for at least 20 ...

26 июн. 2020 г. · Try resetting the iMac. Take out one stick of ram and turn on to the chime then off again three times then put the ram back in and hold command ...

10 июл. 2023 г. · I made a bootable usb drive for OS Lion then plug it in my Mac. I hold the option key but the usb doesn't show up.

6 февр. 2022 г. · I tried booting up from the USB on the laptop, but it does not show up in the boot drive selection. Does anyone know why the USB is not showing in the boot ...

8 мая 2023 г. · Here are Apple's official instructions for creating a bootable USB. You can also try DiskMakerX. You'll need another functioning Mac for either method.

7 сент. 2023 г. · I have an Early 2011 Macbook pro 13" which will not detect a bootable usb, I do not have another mac to make a bootable with so i used transmac.

2 апр. 2024 г. · Now you can boot without pressing 'Option' key and OC will now provide a bootscreen. There you can select the Install macOS USB and proceed.

25 апр. 2023 г. · I have tried internet recovery and USB boot disk. Macbook Pro late 2011 i forget exaclty what i did orginally, but i tried to wipe it clean.

1 окт. 2021 г. · Two things to test - Does your usb stick show up on another mac and it verify as bootable? Do your usb ports work? If both are true then your ...

31 дек. 2022 г. · Then, go into Startup Security Utility and make sure that USB boot is enabled. Make sure that the bootable installer installs macOS Catalina or ...