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#Mac not picking up usb in startup manager install
#Mac not picking up usb in startup manager iso
#Mac not picking up usb in startup manager mac

#Mac not picking up usb in startup manager install

I was able to install Ubuntu 18.04.5 LTS on the virtual machine. I state this because the flash drive can EFI boot in a VirtualBox virtual machine on the 2013 iMac running Catalina.

#Mac not picking up usb in startup manager mac

Neither Mac Starup Manger could detect a EFI boot file on the flash drive, even though such files do exist on the flash drive. This is expected, since iMacs could not BIOS boot from flash drives until at least after the 2011 model year. The same flash was not detected by the Mac Startup Manager on a 2007 iMac.

While I was able to boot, I choose not to install. I found the USB flash drive created using the mini.iso file was BIOS bootable by the Startup Manager on a 2013 iMac. Sudo dd if=~/Downloads/mini.iso of=/dev/sdc bs=1M Here, the identifier for the flash drive was sdc. The same can be accomplished with Linux by entering the commands given below. Sudo dd if=~/Downloads/mini.iso of=/dev/rdisk2 bs=1m An example of the commands is given below. The identifier for the flash drive was disk2. So, what appears on the flash drive is exactly what exists in the file.

#Mac not picking up usb in startup manager iso

I transferred an ISO file to a USB flash drive by writing the file directly to the flash drive. The short answer is the mini.iso is bootable, just not bootable from a USB flash drive on a Mac of your vintage. Installing Linux on 2009 iMac, black screen after bootloader Is the error that I receive and I have tried editing the GRUB settings to include 'nomodeset' as suggested on forums such as this one:Į.g. The standard Ubuntu ISO can't be installed due to a GPU issue: An earlier attempt to install Ubuntu Server crashed so when I boot the machine it goes to blank screen with just only '_'. Startup manager is not recognising the bootable USB that has been loaded with the Ubuntu Server Netboot ISO, though it is recognising a USB that has been loaded with the standard Ubuntu USB - does anyone know why this might be? I am using the same program to create both bootable USBs and I have tried different USB ports.įor context there isn't a functioning OS on this machine. I am trying to turn an iMac mid 2010 21.5" into a home server by installing Ubuntu Server 20.04 LTS on it. If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.Apologies if this question is inappropriate for this forum I am not sure whether I should be on the Apple or Ubuntu StackExchange.

Some key combinations don't work when your Mac is using a firmware password.

If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac. Or use your built-in keyboard or a wired keyboard.

If you're using a wireless keyboard, plug it into your Mac, if possible.

Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.

You might need to wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up.

Then press and hold the key combination after pressing the power button to turn on your Mac. If you can't shut down, press and hold the power button for up to 10 seconds, until your Mac turns off.

If you can't get a key combination to work when restarting your Mac, shut down your Mac first.

Press and hold all keys in the combination together, not one at a time.